calciz

Energy Converter

Convert between any of the 9 supported Energy units. Pick the units, type a value, done.

Supported units

Joules (J): The SI unit of energy: one watt for one second.

Kilojoules (kJ): 1,000 joules. Food energy labels in Australia and Europe.

Megajoules (MJ): One million joules. Gas bills and vehicle crash energies.

Calories (cal): The small (gram) calorie: 4.184 J. Chemistry, not food labels.

Kilocalories (kcal): 1,000 small calories. This is the 'calorie' on food labels.

Watt-hours (Wh): 3,600 joules. Phone and laptop battery capacity.

Kilowatt-hours (kWh): 3.6 MJ. The unit on your electricity bill.

BTU (BTU): British thermal unit, about 1,055 J. Heating and air conditioning in the US.

Therms (thm): 100,000 BTU, about 29.3 kWh. The billing unit on US natural gas bills.

All conversions

J to kJ J to MJ J to cal J to kcal J to Wh J to kWh J to BTU J to thm kJ to J kJ to MJ kJ to cal kJ to kcal kJ to Wh kJ to kWh kJ to BTU kJ to thm MJ to J MJ to kJ MJ to cal MJ to kcal MJ to Wh MJ to kWh MJ to BTU MJ to thm cal to J cal to kJ cal to MJ cal to kcal cal to Wh cal to kWh cal to BTU cal to thm kcal to J kcal to kJ kcal to MJ kcal to cal kcal to Wh kcal to kWh kcal to BTU kcal to thm Wh to J Wh to kJ Wh to MJ Wh to cal Wh to kcal Wh to kWh Wh to BTU Wh to thm kWh to J kWh to kJ kWh to MJ kWh to cal kWh to kcal kWh to Wh kWh to BTU kWh to thm BTU to J BTU to kJ BTU to MJ BTU to cal BTU to kcal BTU to Wh BTU to kWh BTU to thm thm to J thm to kJ thm to MJ thm to cal thm to kcal thm to Wh thm to kWh thm to BTU