Energy Converter
Convert between joules, calories, BTU, kilowatt-hours, and more
How to Use
1
Enter an energy value in any input field
2
All other units update automatically in real-time
3
Perfect for physics, nutrition, and engineering
Conversion Formulas
J → kJ: kJ = J ÷ 1000
kWh → J: J = kWh × 3600000
cal → J: J = cal × 4.184
BTU → J: J = BTU × 1055.06
kcal → cal: cal = kcal × 1000
FAQ
What energy units are supported?
This converter supports joules (J), kilojoules (kJ), kilowatt-hours (kWh), calories (cal), BTU, and kilocalories (kcal).
What is a joule?
A joule is the SI unit of energy, defined as the energy transferred when a force of one newton acts through one meter.
Can I convert food calories?
Yes, food calories (kilocalories) can be converted to joules or kilojoules.