๐ฅ Energy Converter
Joule (J)4,184
Kilojoule (kJ)4.184
Calorie (cal)1,000
Kilocalorie (kcal)1
Watt-hour (Wh)1.162222
Kilowatt-hour (kWh)0.001162
British Thermal Unit (BTU)3.965651
Convert between joules (J), calories (cal), watt-hours (Wh), BTU, and other energy units in real time. Handy for comparing food calorie labels with electricity usage, science homework, or checking the specs of imported appliances.
How to use
- Enter a value into any energy unit field (J, kJ, cal, kcal, Wh, kWh, or BTU).
- The converted values appear instantly in the other unit fields.
FAQ
What's the relationship between calories and joules?
1 cal is about 4.184 J. This is useful for comparing nutrition labels in kcal with electricity usage in kWh or J.
Can I use this to estimate my electricity bill?
It's useful for converting kWh to other units, but for an actual bill estimate, try our Electricity Bill Calculator.
What is a BTU?
BTU stands for British Thermal Unit, commonly used to rate the capacity of air conditioners and heaters, especially in US-made products.