5 calculators
Energy & Power
Convert energy, power, and electricity units.
Calculators
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Electricity Usage Converter
Estimate electricity usage in kWh from watts, quantity, runtime, and load factor, then convert kWh, Wh, MWh, joules, MJ, and BTU with cost and CO2 context.
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Energy Converter
Convert energy units including joules, calories, kilocalories, watt-hours, kilowatt-hours, megawatt-hours, BTU, therms, electronvolts, foot-pounds, and ergs.
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Natural Gas Converter
Convert natural gas units between cubic metres, cubic feet, ccf, Mcf, Btu, therms, MMBtu, dekatherms, and kWh, then compare cost per therm, MMBtu, Mcf, ccf.
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Power Converter
Convert power units including watts, kilowatts, horsepower, BTU per hour, tons of refrigeration, calories per second, and foot-pounds per second.
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Solar Panel Output Calculator
Estimate daily, monthly, and annual kWh output from solar panel wattage, panel count, peak sun hours, and system efficiency.
Related categories
Measurement
Convert between metric and imperial measurement units.
Speed
Convert between mph, km/h, m/s, knots, and other speed units.
Time & Duration
Convert time durations between seconds, minutes, hours, days, weeks, and years.
Digital
Convert digital storage and data transfer units.