Formula
BTUₕᵀ to kcal conversion formula
Use this relationship for a direct conversion:
Worked example
2 BTUₕᵀ = 0.5043288014 kcal.
The thermochemical calorie and International Table BTU are named explicitly to avoid ambiguous legacy definitions.
Energy conversion
1 btu (international table) (BTUₕᵀ) equals 0.252164400722 kilocalorie (kcal). Enter any value below to convert from BTUₕᵀ to kcal.
Enter a value and choose units. Results update instantly.
1 BTUₕᵀ = 0.2521644007 kcal
| Unit | Value |
|---|---|
| Joule J | 1,055.05585262 |
| Kilojoule kJ | 1.0550558526 |
| Thermochemical calorie cal | 252.1644007218 |
| Kilocalorie kcal | 0.2521644007 |
| Watt-hour Wh | 0.2930710702 |
| Kilowatt-hour kWh | 0.0002930711 |
| BTU (International Table) BTUₕᵀ | 1 |
| Foot-pound ft·lb | 778.169262266 |
| Electronvolt eV | 6.5851406782e21 |
Formula
Use this relationship for a direct conversion:
2 BTUₕᵀ = 0.5043288014 kcal.
The thermochemical calorie and International Table BTU are named explicitly to avoid ambiguous legacy definitions.
Quick reference
| BTU (International Table) (BTUₕᵀ) | Kilocalorie (kcal) |
|---|---|
| 0.01 | 0.002521644 |
| 0.1 | 0.0252164401 |
| 1 | 0.2521644007 |
| 2 | 0.5043288014 |
| 5 | 1.2608220036 |
| 10 | 2.5216440072 |
| 25 | 6.304110018 |
| 50 | 12.6082200361 |
| 100 | 25.2164400722 |
| 1,000 | 252.1644007218 |
From unit
The International Table British thermal unit.
Symbol: BTUₕᵀ
To unit
One thousand thermochemical calories.
Symbol: kcal
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 kcal = BTUₕᵀ x 0.252164400722. 1 btu (international table) (BTUₕᵀ) equals 0.252164400722 kilocalorie (kcal).
The thermochemical calorie and International Table BTU are named explicitly to avoid ambiguous legacy definitions.