Calculate Electricity Usage. Energy Use Calculator offers electricity usage calculators for various devices. Allowing you to calculate the electrical cost of your home appliances, and helping you save power consumption costs. To find the energy cost of your appliance, select a device from the list below. LED Light Bulb. CFL Light Bulb.The electrical calculation app contains all types of information that electrical engineers require, like electrical formulas for voltage, current, and efficiency, all available in the electrical calculation app. We can use an electrical calculator that makes sure to calculate the particular electrical quantities. Using an electronic calculator ...Electrical and Electronics Calculators. These electrical and electronics engineering calculators are to help electronics/circuit designers to solve complex equations and calculations quickly. LC Tank Circuit Resonance Calculator. Resistor Wattage Calculator. Bitwise Calculator.Wattage in Watts / 1,000 × Hours Used × Electricity Price per kWh = Cost of Electricity. So, for example, if we have a 40 W lightbulb left on for 12 hours a day and electricity costs $.15 per kilowatt-hour, the calculation is: 40 watts / 1,000 × 12 hours × $.15/kWh = $.072. This electricity cost calculator works out how much electricity a ... For homes over 2,000 square feet, your electricity use may be higher. As a general reference, here are estimated monthly kWh usage ranges based on home size: 2,500 sq ft – 1,250 to 2,500 kWh. 3,000 sq ft – 1,500 to 3,000 kWh. 3,500 sq ft – 1,750 to 3,500 kWh. 4,000 sq ft – 2,000 to 4,000 kWh. 4,500 sq ft – 2,250 to 4,500 kWh. The Electrical Length Calculator is a valuable tool that simplifies these calculations, making it easier for engineers and enthusiasts to fine-tune their designs. Formula: Before delving into the calculator, let’s explore the formula used to calculate electrical length: Electrical Length (in degrees) = (Physical Length / Wavelength) × 360Electrical Contractors, Designers, Electricians and Lighting Specialists calculate tough electrical calculations in seconds and deliver those solutions in conformance with the latest NEC®. The ElectriCalc Pro calculator is a complete electrical reference tool that will save time, trouble and money—this calc will quickly become an … Using our Home Electricity Usage Calculator is a breeze. Simply follow these steps: Enter relevant information such as the size of your home, its age, the number of occupants, and your usage habits. The calculator will process the data and provide you with an estimated monthly energy usage in kilowatt-hours (kWh). Electrical Formulas helps us to calculate the parameters related to electricals in any electrical components. Solved Examples. Example 1: A wire carrying a current of 4 Amperes is having a resistance of 5 \(\begin{array}{l}\omega\end{array} \). Calculate the potential difference across its ends.It is the calculation of the combined volume occupied by conducting wires, grounding wires, and other components in an electrical utility box. The main objective of this box fill calculation is to prevent overcrowding in electrical boxes because an overloaded box can result in faults, arcing, or even pose a risk of fire. How To Calculate Box Fill?This calculation does not take into account rebates, discounts, or special tariff incentives such as Off Peak Tariff Ride (OPTR), Sunday Tariff Rider (STR) etc. 4. Service Tax (ST) at the rate of 8% will be charged in TNB electricity bills for Residential Customer with consumption more than 600 kWh effective from 1st March 2024.Electrical Contractors, Designers, Electricians and Lighting Specialists calculate tough electrical calculations in seconds and deliver those solutions in conformance with the latest NEC®. The ElectriCalc Pro calculator is a complete electrical reference tool that will save time, trouble and money—this calc will quickly become an …The cable size results for International standard cable are calculated from IEC 60364-5-52: Low Voltage Electrical Installations, selection and erection of electrical equipment – Wiring systems and are based on 230V and 415V voltage drop. In both BS and IEC calculations, the KW calculation is based on a power factor of 0.8.Find Electrical Engineering Calculator at CalcTown. Use our free online app Electrical Engineering Calculator to determine all important calculations with parameters and constants.Add in the wattage of all permanent appliances, such as washer/dryer, electric range, or water heaters. Subtract 10,000 & multiply this number by .40. Add 10,000. Add the wattage of your AC or heating appliances (furnace + space heaters), whichever is greater – Don’t add both! Divide by 240.Learn the Power Formula. We’ve seen the formula for determining the power in an electric circuit: by multiplying the voltage in “volts” by the current in “amps” we arrive at an answer in “watts.” Let’s apply this to a circuit example: How to Use Ohm’s Law to Determine Current. In the above circuit, we know we have a battery voltage of 18 volts and a lamp …Online electricalal calculators for calculations of electricality and electronics. Electrical calculators are a collection of online tools that perform common electricalal …This online calculator can help you solve the problems on work done by the current and electric power. It can calculate current, voltage, resistance, work, power and time …This Calculator will determine the minimum size conductor needed based on a 3% Voltage Drop. It does not take into consideration other factors such as minimum ampacity based on the National Electric Code Table 310 …See full list on calculator.net Ohm's law calculation formula. The current I in amps (A) is equal to the voltage V in volts (V) divided by the resistance R in ohms (Ω): I =. VR. Example. I =. 20V. 10Ω = 2A. The power P in watts (W) is equal to the voltage V in volts (V) times the current I in amps (A): Use this calculator to determine Watts (W), Volts (V), Amps (A), and Ohms (Ω). It's designed for DC power, voltage, current, and resistance calculations. Just input any …This could cause the plug in the wall socket to overheat and possibly cause a fire. Use our overload calculator (below) to check if you’re exceeding the maximum load. The Socket Calculator has been brought to you by Electrical Safety First. For more safety information visit https://www.electricalsafetyfirst.org.uk.Electrical Calculations is the best app in the electrical sector, it has many calculations that can help you in your work. It can not miss in your smartphone! Main calculations: Wire size, voltage drop, current, voltage, active / apparent / reactive power, power factor, resistance, Maximum wire len…Power Calculator. Power consumption calculator: calculates electric power / voltage / current / resistance. DC power calculator. AC power calculator. Energy & power …American wire gauge size calculator and chart. Wire gauge calculations Wire diameter calculations. The n gauge wire diameter d n in inches (in) is equal to 0.005in times 92 raised to the power of 36 minus gauge number n, divided by 39:. d n (in) = 0.005 in × 92 (36-n)/39. The n gauge wire diameter d n in millimeters (mm) is equal to 0.127mm times 92 …American wire gauge size calculator and chart. Wire gauge calculations Wire diameter calculations. The n gauge wire diameter d n in inches (in) is equal to 0.005in times 92 raised to the power of 36 minus gauge number n, divided by 39:. d n (in) = 0.005 in × 92 (36-n)/39. The n gauge wire diameter d n in millimeters (mm) is equal to 0.127mm times …Electrical Calculations is the best app in the electrical sector, it has many calculations that can help you in your work. It can not miss in your smartphone! Wire size, voltage drop, current, voltage, active / apparent / reactive power, power factor, resistance, Maximum wire length, Current carrying capacity of insulated conductors / bare ... Time in use: Min ute s H ou rs. Cost of electricity: £0.25 per 60 minutes. £0.245 per 60 minutes. Electricity costs are calculated using the UK: Price Cap (Apr 2024) electricity rate of £0.24 per kWh (incl. VAT). Calculations exclude the UK Daily Standing Charge of £0.60 per day or £219.36 per year (incl. VAT). Gas Cost Calculator. Room Cooler 250W. 0. Total load (W) *. Average running load (%) *. Our Power Consumption Calculator is easy to use & helps you know exact total load reqs for your property! Three steps & you're done. Try it now!The power factor calculator helps you determine the power factor, the ratio of real power to apparent power, in an AC circuit. You can use it to find the power factor angle, the reactive power, the real power, or the apparent power. You can also explore how different components, such as resistors, capacitors, and inductors, affect the power …The electrical calculation app contains all types of information that electrical engineers require, like electrical formulas for voltage, current, and efficiency, all available in the electrical calculation app. We can use an electrical calculator that makes sure to calculate the particular electrical quantities. Using an electronic calculator ...Breaker size calculator is a online calculator tool (electrical calculator) that may be used to determine the proper size of a circuit breaker for a certain electrical circuit. It takes into consideration a wide range of requirements such as voltage, power consumed by appliances/devices connected to the circuit, wire type, and safety regulations. Unlock the Power of Electrical Calculations with Our Free Online Tools. Welcome to x-calculator.com, where we bring you a toolbox that’s as easy as flipping a switch for your electrical needs! Our collection of electrical calculators is designed to make your calculations a breeze without costing you a dime. Voltage, Current, Resistance ... Time in use: Min ute s H ou rs. Cost of electricity: £0.25 per 60 minutes. £0.245 per 60 minutes. Electricity costs are calculated using the UK: Price Cap (Apr 2024) electricity rate of £0.24 per kWh (incl. VAT). Calculations exclude the UK Daily Standing Charge of £0.60 per day or £219.36 per year (incl. VAT). Gas Cost Calculator. Power Calculator. Power consumption calculator: calculates electric power / voltage / current / resistance. DC power calculator; AC power calculator; Energy & power calculator; DC power calculator. Enter 2 values to get the other values and press the Calculate button: An electronic pocket calculator with a seven-segment liquid-crystal display (LCD) that can perform arithmetic operations A modern scientific calculator with an LCD. An electronic calculator is typically a portable electronic device used to perform calculations, ranging from basic arithmetic to complex mathematics.. The first solid-state electronic calculator … To calculate the cost of powering our toaster, we multiply the 0.15 kWh-per-day figure by our energy cost per kWh. For our example, we'll say that our electricity provider charges us $0.20 (20 cents) per kWh. 0.15 × $0.20 = $0.03. So, we've calculated that the toaster is costing you 3 cents per day in electricity. Common electrical units used in formulas and equations are: Volt - unit of electrical potential or motive force - potential is required to send one ampere of current through one ohm of resistance; Ohm - unit of resistance - one ohm is the resistance offered to the passage of one ampere when impelled by one volt; Ampere - units of current - one …Electrical Calculation Tools. Version 5.1.0. View Update. Whether you are designing a new installation, expanding an existing one or doing maintenance, Electrical Calculation Tools is a suite of online tools for a quick Protection device Selection, Selectivity Checking and Cable Calculation. Protections.Below is a calculator that will tell you how much your HECS-HELP debt will increase by if indexation is applied in the same way it did last year. It's automatically set …Using the formula, the electrical load can be calculated as: P = 230 V × 10 A. = 2300 W. Understanding how to calculate electrical load is crucial for anyone working with electrical systems. Armed with this knowledge and this calculator, you can now assess the electrical load of various appliances and circuits with greater accuracy and confidence.Power Calculator. Power consumption calculator: calculates electric power / voltage / current / resistance. DC power calculator. AC power calculator. Energy & power …Learn Basic Electrical Engineering, Protection Switch gear, relays, Online Calculator, Electrical - Get More Electrical Knowledge with easy English, Electrical CalculatorElectricity Calculator. Use the calculator below to estimate electricity usage and cost based on the power requirements and usage of appliances. The amount of time and power that each appliance is used varies significantly between households, so for the best results, adjust the usage for each appliance to … See more Online electrical design calculators for cables, arc flash, maximum demand, motors, tranformers, generators, etc. Then it is essential to use an electrical wire size calculator before choosing a wire. Wire Size Chart: A wire size chart designed to specify the Diameter and Area in AWG. You can identify the area and diameter in inches and meters of 0 to 10-gauge wire. Future estimation of various AWG implies electrical wire calculators.Electrical Power. Power is the rate at which electrical energy is transferred by an electric circuit per unit time typically expressed in the SI (International System of Units) unit of Watts. ... and R. This is essentially what the calculator does, and is just a representation of the algebraic manipulation of the equations above. To use the ...The cable size results for International standard cable are calculated from IEC 60364-5-52: Low Voltage Electrical Installations, selection and erection of electrical equipment – Wiring systems and are based on 230V and 415V voltage drop. In both BS and IEC calculations, the KW calculation is based on a power factor of 0.8.Voltage Drop Calculator. This is a calculator for the estimation of the voltage drop of an electrical circuit. The "NEC data" tab calculates based on the resistance and reactance data from the National Electrical Code (NEC). The "Estimated resistance" tab calculates based on the resistance data estimated from the wire size.Electricity Cost Calculator UK: Prices based on the new Energy Price Cap (October 2022). Electricity Consumption in Kilowatt Hours (kWhs): *. The average UK electricity bill is 2,900 kWh of electricity each year. Cost of Electricity (In Great British Pounds (£)): This figure is based on the latest Energy Price Cap*.To convert amps (electrical current) to watts (electrical power) at a fixed voltage, you can use the equation: watts = amps × volts. Simply multiply your amps figure by the voltage. Example calculations. 15 amps × 120 volts = 1800 watts; 20 amps × 120 volts = 2400 wattsElectrical Calculators Org. Search for: Hydroelectric Power Calculator – Hydro Power Plant Formula Equation Calculator. Hydroelectric Power Calculator is a useful online calculation tool used to calculate the power generated in kilowatts and megawatts from the known values of density in kg/m 3, ...Kilowatt-hours are the standard units of energy used by the electricity meter in our homes to calculate the amount of electrical energy we use and therefore how much we pay. So if you switch ON an electric fire with a heating element rated at 1000 watts and left it on for 1 hour you will have consumed 1 kWhr of electricity. If you switched on ... Energy Use Calculator offers electricity usage calculators for various devices. Allowing you to calculate the electrical cost of your home appliances, and helping you save power consumption costs. To find the energy cost of your appliance, select a device from the list below. LED Light Bulb. CFL Light Bulb. Incandescent Bulb. LCD/LED TV/Display. The electrical calculation app contains all types of information that electrical engineers require, like electrical formulas for voltage, current, and efficiency, all available in the electrical calculation app. We can use an electrical calculator that makes sure to calculate the particular electrical quantities. Using an electronic calculator ...Electricity Bill Calculator UK. Welcome to Electricity Bill Calculator UK. We are the leading online energy bill calculator to work out electricity cost and estimate KWh usage from meter readings or a recent utility bill from your energy supplier. Enter your previous and current meter readings below and click the ‘Calculate’ button to get an advanced …Wattage in Watts / 1,000 × Hours Used × Electricity Price per kWh = Cost of Electricity. So, for example, if we have a 40 W lightbulb left on for 12 hours a day and electricity costs $.15 per kilowatt-hour, the calculation is: 40 watts / 1,000 × 12 hours × $.15/kWh = $.072. This electricity cost calculator works out how much electricity a ...Power Factor PF = 0.65. The formula of Electrical Power is P = I x V x PF. P = 3.5 x 12 x 0.65. = 27.3. Therefore, the electrical power consumed in the circuit is 27.3 Watts. Get instant help with the physics concepts you never seemed to understand with the calculators prevailing on Onlinecalculator.guru.Compare loft insulation and cavity wall insulation with us to get up to four, free no-obligation quotes to compare prices and find the best deal for you. *£390 savings a year figure is for 1940's 3 bed semi-detached home with a ten-year-old gas boiler and a gas price of 3.73p/kWh, when cavity wall insulation and loft insulation are installed.How to Calculate Electric Current. In an electrical circuit, current is a measure of the flow of charged particles moving through a conductor. Current is measured in units of amperes (usually referred to as amps).. You can calculate the current flowing through a conductor using Ohm’s Law, which states that the current through a circuit element is directly … E = P t E = P t. Where: E = Energy dissipated in a resistive element in joules. P = Power dissipated in a resistive element in watts. t = The duration of time the energy was dissipated in seconds. By definition 1 watt = 1 joule per second (1 W = 1 J/s). Similarly, you can flip that equation around and it becomes 1 joule = 1 watt for 1 second (1 ... Electrical engineering calculator. Enter a description of your widget (e.g. what it does, what input to enter, what output it gives, and how it is useful). Get the free "Electrical engineering calculator " widget for your website, blog, Wordpress, Blogger, or iGoogle. Find more none widgets in Wolfram|Alpha. kWh to kW calculator. kWh to Watts calculator. mA to Amps calculator. mAh to Ah calculator. mAh to Wh calculator. Ohms to Amps calculator. Ohms to Volts calculator. VA to Amps calculator. VA to kVA calculator.A residential customer using electricity for residential purposes only. The concessionary tariff is based on bimonthly meter-readings. Benefits As an approved applicant, your first 400 units of electricity is charged at half-price. The half-price applies to the energy charge, Fuel Cost Adjustment, and Energy Saving Rebate under Residential Tariff The amount of electricity or electric charge is the product of the current strength by the time the current flows. Use our Electrical Work Calculator to easily calculate the work done by an electric current, taking into account voltage, resistance, power, and energy. Perfect for students and professionals in physics and electrical engineering. Our collection of electrical calculators is designed to make your calculations a breeze without costing you a dime. Shockingly Simple Online Electrical Calculators. Voltage, … Online electrical calculators for calculations of electricity and electronics. Amps to kW calculator. Amps to kVA calculator. Amps to VA calculator. Amps to volts calculator. Amps to watts calculator. Electricity bill calculator. Energy consumption calculator. Energy cost calculator. The flow of electric charge Q is referred to as an electric current I. The amount of charge per unit time is the change in electric current. A current flows at a constant value I. during the time t, it transports the charge Q = I × t. For a temporally constant power, the relationship between the charge and current: I = Q / t or Q = I × t. Electricity cost calculation. The electricity cost per day in dollars is equal to the energy consumption E in kWh per day times the energy cost of 1 kWh in cents/kWh divided by 100 cents per dollar: Cost ($/day) = E(kWh/day) × Cost (cent/kWh) / 100 (cent/$) See also. Energy consumption calculator. How to save electricity. Breaker sizing calculator parameter: Choose the method: provide load (in kilowatts or watts) and current (in amps) If current selected: rated current of equipment and required safety factor (S.F) to be entered If load selected: For option: For DC, 1∅ AC and 3∅ AC. For DC circuits: voltage (in volts), power (in watts or kilowatts) and safety factor (S.F) (in … Electricity cost calculation. The electricity cost per day in dollars is equal to the energy consumption E in kWh per day times the energy cost of 1 kWh in cents/kWh divided by 100 cents per dollar: Cost ($/day) = E(kWh/day) × Cost (cent/kWh) / 100 (cent/$) See also. Energy consumption calculator. How to save electricity. Electrical engineering calculator. Enter a description of your widget (e.g. what it does, what input to enter, what output it gives, and how it is useful). Get the free "Electrical engineering calculator " widget for your website, blog, Wordpress, Blogger, or iGoogle. Find more none widgets in Wolfram|Alpha. 💡 With our kVA calculator, you can calculate multiple setups in no time. If you have the value for the power factor and want to find the electrical system's real power output, tick on the Display power factor and real power checkbox of our kVA calculator to show the kVA to kW calculator.Once you're there, simply input the needed values to …Our collection of electrical calculators is designed to make your calculations a breeze without costing you a dime. Shockingly Simple Online Electrical Calculators. Voltage, … Time in use: Min ute s H ou rs. Cost of electricity: £0.25 per 60 minutes. £0.245 per 60 minutes. Electricity costs are calculated using the UK: Price Cap (Apr 2024) electricity rate of £0.24 per kWh (incl. VAT). Calculations exclude the UK Daily Standing Charge of £0.60 per day or £219.36 per year (incl. VAT). Gas Cost Calculator. Use our Electrical Work Calculator to easily calculate the work done by an electric current, taking into account voltage, resistance, power, and energy. Perfect for students …Energy Cost Calculation. The energy cost per day in dollars is equal to the energy consumption E in kWh per day times the energy cost of 1 kWh in cents/kWh divided by 100 cents per dollar: Cost ($/day) = E(kWh/day) × Cost (cent/kWh) / 100 (cent/$) Calculate and estimate your energy costs effortlessly with RapidTables.info's Energy Cost Calculator. How to Use the Energy Bill Calculator. Enter your energy usage in kWh. You can find this information on your electricity bill, or estimate your monthly usage based on your appliances and daily activities. Input your current electricity tariff rate. This is usually expressed in pence per kWh and can also be found on your energy bill. Electrical load calculations come down to a 6 key-step formula to calculate your home’s power load. Lights and outlets: Multiply the square feet of your home’s living area by 3. This calculation determines the wattage needed for light fixtures and receptacle loads. Example 2000 x 3 = 6000 watts.With over 3,000 calculators, Inch Calculator is one of the largest and most trusted sites for calculations in math & science education, construction planning, electrical engineering, health & fitness, finance, automotive, and several other fields. The energy E in kilowatt-hours (kWh) per day is equal to the power P in watts (W) times the number of usage hours per day t divided by 1000 watts per kilowatt: E(kWh/day) = P(W) × t(h/day) / 1000 (W/kW) Estimate and manage your power usage with our Energy Consumption Calculator. Easily calculate electricity costs, understand energy efficiency ... This tool was designed to help you quickly calculate the equivalent resistance of up to 6 resistors connected in parallel. To use it, just specify how many parallel resistors there are and the resistance value for each one. If you have more than 6 resistors, simply use the calculator to determine the equivalent resistance of the first 6 ...Energy Cost Calculation. The energy cost per day in dollars is equal to the energy consumption E in kWh per day times the energy cost of 1 kWh in cents/kWh divided by 100 cents per dollar: Cost ($/day) = E(kWh/day) × Cost (cent/kWh) / 100 (cent/$) Calculate and estimate your energy costs effortlessly with RapidTables.info's Energy Cost Calculator.Energy Use Calculator provides free energy usage calculators to find the electricity consumption of your devices. We cover most electrical devices and home appliances, our online calculators can be edited to fit any home appliance and accurately calculate power costs. Get Started. Top 5 reasons to use our services:
Electricity cost calculation. The electricity cost per day in dollars is equal to the energy consumption E in kWh per day times the energy cost of 1 kWh in cents/kWh divided by 100 cents per dollar: Cost ($/day) = E(kWh/day) × Cost (cent/kWh) / 100 (cent/$) See also. Energy consumption calculator. How to save electricity. . Skeptical inquirer
Energy Usage Calculation Formula. To calculate energy consumption follow this simple formula. Energy (E) in kilowatt-hours (kWh) is equal to the power (P) in watts (W) multiplied by the number of hours used (t) per day divided by 1,000 watts per kilowatt. E(kWh/day) = P(W) × t(h/day) / 1000(W/kW) Voltage drop calculations DC / single phase calculation. The voltage drop V in volts (V) is equal to the wire current I in amps (A) times 2 times one way wire length L in feet (ft) times the wire resistance per 1000 feet R in ohms (Ω/kft) divided by 1000:Electrical Calculations is the best app in the electrical sector, it has many calculations that can help you in your work. It can not miss in your smartphone! Main calculations: Wire size, voltage drop, current, voltage, active / apparent / reactive power, power factor, resistance, Maximum wire len…What are Electrical Calculations. Electrical calculations involve mathematical computations that are crucial in the field of electrical engineering. They are used in the design, installation, operation, and maintenance of electrical systems.These electrical and electronics engineering calculators are to help electronics/circuit designers to solve complex equations and calculations quickly. LC Tank Circuit …Kilowatt-hours are the standard units of energy used by the electricity meter in our homes to calculate the amount of electrical energy we use and therefore how much we pay. So if you switch ON an electric fire with a heating element rated at 1000 watts and left it on for 1 hour you will have consumed 1 kWhr of electricity. If you switched on ...This calculation does not take into account rebates, discounts, or special tariff incentives such as Off Peak Tariff Ride (OPTR), Sunday Tariff Rider (STR) etc. 4. Service Tax (ST) at the rate of 8% will be charged in TNB electricity bills for Residential Customer with consumption more than 600 kWh effective from 1st March 2024.Compare loft insulation and cavity wall insulation with us to get up to four, free no-obligation quotes to compare prices and find the best deal for you. *£390 savings a year figure is for 1940's 3 bed semi-detached home with a ten-year-old gas boiler and a gas price of 3.73p/kWh, when cavity wall insulation and loft insulation are installed.Voltage Drop Calculator. This is a calculator for the estimation of the voltage drop of an electrical circuit. The "NEC data" tab calculates based on the resistance and reactance data from the National Electrical Code (NEC). The "Estimated resistance" tab calculates based on the resistance data estimated from the wire size.These electrical and electronics engineering calculators are to help electronics/circuit designers to solve complex equations and calculations quickly. LC Tank Circuit …The formula used for this calculation is as simple as it is effective: Electrical Load (in watts) = Quantity of Devices × Power Rating of Each Device. "Quantity of Devices" refers to the total number of electrical devices in the building, and "Power Rating of Each Device" is the amount of electrical power each device consumes when operating at ...Oct 21, 2022 · Voltage, Current, Power, Resistance, Circuit analysis, and more. These online calculators are useful for professionals, students, and electrical enthusiasts as well. They can do everything from simple Ohm’s Law calculations to complex formulas for motors and transformers. Whether you need to find electrical parameters, solve network analysis ... The energy E in kilowatt-hours (kWh) per day is equal to the power P in watts (W) times the number of usage hours per day t divided by 1000 watts per kilowatt: E(kWh/day) = P(W) × t(h/day) / 1000 (W/kW) Estimate and manage your power usage with our Energy Consumption Calculator. Easily calculate electricity costs, understand energy efficiency ... .