ConvCalc App Store Energy converter
Convert joules, kilojoules, calories, kilocalories, BTU, kilowatt-hours, ergs and foot-pounds.
How it works
Tap a unit and type your value to see the others. It's useful for food labels, electricity bills and physics problems.
Keep it on your iPhone
This tool is one of 20 in ConvCalc, alongside a scientific calculator with history. The app is free and has no ads.
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