Energy & Power
Energy and power converters: joules, calories and food kilocalories, kilowatt-hours from your electricity bill, BTU and therms for heating, and the three different definitions of horsepower.
From Amps (1)
From BTU (12)
From BTU per Hour (6)
From Calories (11)
From Electronvolts (10)
From Foot-pounds (10)
From Foot-pounds per Second (6)
From Horsepower (7)
From Joules (11)
From Kilocalories (10)
From Kilojoules (11)
From Kilowatt-hours (10)
From Kilowatts (7)
From Lumens (1)
From Megajoules (10)
From Megawatts (6)
From Metric Horsepower (6)
From Therms (11)
From Watt-hours (10)
From Watts (7)
About the energy & power
Energy and power converters: joules, calories and food kilocalories, kilowatt-hours from your electricity bill, BTU and therms for heating, and the three different definitions of horsepower. There are 165 converters in this category, and each one shows the formula it uses, works instantly as you type, and keeps your figures on your own device.
Grouped above by the unit you are converting from, so a category with hundreds of pairs stays scannable. Every conversion also exists in reverse — the link is on each page.
Cannot find what you need? Ask for it — requested calculators go to the front of the build queue.