Kilowatt Hours to Joules
1 kilowatt hour = 3.60000e+6 joules (J)
Convert kilowatt hours to joules instantly. 1 kilowatt hour = 3.60000e+6 joules. Free, accurate, with conversion table and formula.
Kilowatt Hour (kWh)
Joule (J)
| Unit | 1 kWh equals |
|---|---|
| Joule (J) | 3.60000e+6 |
| Kilojoule (kJ) | 3,600 |
| Calorie (cal) | 860,421 |
| Kilocalorie (kcal) | 860.421 |
| Watt Hour (Wh) | 1,000 |
| Kilowatt Hour (kWh) | 1 |
| BTU (BTU) | 3,412.13 |
| Electron Volt (eV) | 2.24694e+25 |
| Foot-Pound (ft·lb) | 2.65522e+6 |
How to convert kilowatt hours to joules
- 1Take your value in kilowatt hours (kWh).
- 2Multiply by 3.60000e+6.
- 3The result is your value in joules (J).
Kilowatt Hours to Joules conversion table
| Kilowatt Hours (kWh) | Joules (J) |
|---|---|
| 1 | 3.60000e+6 |
| 2 | 7.20000e+6 |
| 5 | 1.80000e+7 |
| 10 | 3.60000e+7 |
| 25 | 9.00000e+7 |
| 50 | 1.80000e+8 |
| 100 | 3.60000e+8 |
| 250 | 9.00000e+8 |
| 500 | 1.80000e+9 |
| 1,000 | 3.60000e+9 |
Frequently asked
How many joules are in a kilowatt hour?
1 kilowatt hour equals 3.60000e+6 joules (J).
How do I convert kilowatt hours to joules?
Multiply the number of kilowatt hours by 3.60000e+6 to get joules.
What is 10 kilowatt hours in joules?
10 kWh equals 3.600e+7 J.
What is 100 kilowatt hours in joules?
100 kWh equals 3.600e+8 J.
How do I convert joules back to kilowatt hours?
Multiply joules by 2.77778e-7 (the reciprocal) or use the swap button above.
Where you'll actually use this
Energy converters bridge joules, calories, kilowatt-hours, BTUs, and electron-volts — the same physical quantity expressed for science, nutrition, electricity, or HVAC.
- Electricity bills
Usage is billed in kWh. Convert to joules for physics, or to BTU for HVAC comparisons.
- Nutrition
Food 'calories' are actually kilocalories (kcal). 1 kcal = 4,184 J. EU labels list both kcal and kJ.
- HVAC & cooling
Air conditioner output is quoted in BTU/h in the US, watts elsewhere.
Common mistakes to avoid
- Calories vs kilocalories
When a food label says '250 calories' it really means 250 kcal = 250,000 small calories.
- kW vs kWh
kW is power (rate); kWh is energy (total). A 1 kW heater running for 2 hours uses 2 kWh.
Did you know?
A typical modern fridge uses about 1 kWh per 24 hours — roughly $0.10–$0.30 depending on local rates.
Related conversions
What people do next
Curated handoffs from this tool — picked, not guessed.
Your next conversion is one tap away.
Trending tools, your recent picks, and smart suggestions — curated, not cluttered.