Energy conversion
1 kilocalorie (kcal) equals 1.162222222222 watt-hour (Wh). Enter any value below to convert from kcal to Wh.
Enter a value and choose units. Results update instantly.
1 kcal = 1.1622222222 Wh
| Unit | Value |
|---|---|
| Joule J | 4,184 |
| Kilojoule kJ | 4.184 |
| Thermochemical calorie cal | 1,000 |
| Kilocalorie kcal | 1 |
| Watt-hour Wh | 1.1622222222 |
| Kilowatt-hour kWh | 0.0011622222 |
| BTU (International Table) BTUₕᵀ | 3.9656668314 |
| Foot-pound ft·lb | 3,085.9600325761 |
| Electronvolt eV | 2.6114473968e22 |
Formula
Use this relationship for a direct conversion:
2 kcal = 2.3244444444 Wh.
The thermochemical calorie and International Table BTU are named explicitly to avoid ambiguous legacy definitions.
Quick reference
| Kilocalorie (kcal) | Watt-hour (Wh) |
|---|---|
| 0.01 | 0.0116222222 |
| 0.1 | 0.1162222222 |
| 1 | 1.1622222222 |
| 2 | 2.3244444444 |
| 5 | 5.8111111111 |
| 10 | 11.6222222222 |
| 25 | 29.0555555556 |
| 50 | 58.1111111111 |
| 100 | 116.2222222222 |
| 1,000 | 1,162.2222222222 |
From unit
One thousand thermochemical calories.
Symbol: kcal
To unit
The energy from one watt sustained for one hour.
Symbol: Wh
Keep converting
Source
Definitions are checked against NIST SP 811: Energy units. Calculations use full internal precision before display rounding.
View the complete energy converterQuestions
Use the formula Wh = kcal x 1.162222222222. 1 kilocalorie (kcal) equals 1.162222222222 watt-hour (Wh).
Both unit definitions use exact factors. Only the displayed decimal may be rounded.
