Energy conversions
Every energy unit on the site, and every conversion between them. Each page shows a full table, the exact formula and a live calculator.
All energy units
| Unit | Symbol | In joule |
|---|---|---|
| joule | J | 1 |
| kilojoule | kJ | 1,000 |
| calorie | cal | 4.184 |
| kilocalorie | kcal | 4,184 |
| watt-hour | Wh | 3,600 |
| kilowatt-hour | kWh | 3,600,000 |
| British thermal unit | BTU | 1,055.055853 |
| electronvolt | eV | 1.602176634 × 10^-19 |
Common conversions
- Joules to Kilojoules
- Joules to Kilocalories
- Joules to Watt-hours
- Joules to Kilowatt-hours
- Joules to British thermal units
- Kilojoules to Joules
- Kilojoules to Kilocalories
- Kilojoules to Watt-hours
- Kilojoules to Kilowatt-hours
- Kilojoules to British thermal units
- Kilocalories to Joules
- Kilocalories to Kilojoules
- Kilocalories to Watt-hours
- Kilocalories to Kilowatt-hours
- Kilocalories to British thermal units
- Watt-hours to Joules
- Watt-hours to Kilojoules
- Watt-hours to Kilocalories
- Watt-hours to Kilowatt-hours
- Watt-hours to British thermal units
- Kilowatt-hours to Joules
- Kilowatt-hours to Kilojoules
- Kilowatt-hours to Kilocalories
- Kilowatt-hours to Watt-hours
- Kilowatt-hours to British thermal units
- British thermal units to Joules
- British thermal units to Kilojoules
- British thermal units to Kilocalories
- British thermal units to Watt-hours
- British thermal units to Kilowatt-hours
Sources
- Guide for the Use of the International System of Units (SP 811) — NIST (Public domain (US Government))
- The International System of Units (SI Brochure) — Bureau International des Poids et Mesures