Energy Converter
Convert energy between joules, calories, kilowatt-hours, BTU and foot-pounds.
Energy Converter
Convert energy between joules, calories, kilowatt-hours, BTU and foot-pounds.
How to use the Energy Converter
- Enter the value.
- Select source and target units.
- Click Calculate.
Formula
1 kcal = 4184 J
1 kWh = 3,600,000 J
1 BTU ≈ 1055.06 J
Example
1000 calories to joules: 1000 × 4.184 = 4184 J.
Step-by-step calculation
- Convert to base (joules): 1000 cal × 4.184 = 4184 J.
- Result: 4,184 J.
Real-world uses
- Nutrition and diet calculations.
- Energy bill comparison.
- Physics and engineering.
Common mistakes
- Confusing calories (small) with Calories/kcal (food calories).
- Mixing up BTU and kWh.
- Using wrong conversion factors.
Frequently asked questions
Are calories and Calories the same?
Food Calories (with capital C) are actually kilocalories. 1 Cal = 1 kcal = 1000 cal.
How many calories in a kWh?
1 kWh = 860.421 kcal ≈ 860 Cal.
Which units are supported?
J, kJ, cal, kcal, Wh, kWh, BTU, ft·lb.