Energy conversion
1 thermochemical calorie (cal) equals 0.003965666831 btu (international table) (BTUₕᵀ). Enter any value below to convert from cal to BTUₕᵀ.
Enter a value and choose units. Results update instantly.
1 cal = 0.0039656668 BTUₕᵀ
| Unit | Value |
|---|---|
| Joule J | 4.184 |
| Kilojoule kJ | 0.004184 |
| Thermochemical calorie cal | 1 |
| Kilocalorie kcal | 0.001 |
| Watt-hour Wh | 0.0011622222 |
| Kilowatt-hour kWh | 0.0000011622 |
| BTU (International Table) BTUₕᵀ | 0.0039656668 |
| Foot-pound ft·lb | 3.0859600326 |
| Electronvolt eV | 2.6114473968e19 |
Formula
Use this relationship for a direct conversion:
2 cal = 0.0079313337 BTUₕᵀ.
The thermochemical calorie and International Table BTU are named explicitly to avoid ambiguous legacy definitions.
Quick reference
| Thermochemical calorie (cal) | BTU (International Table) (BTUₕᵀ) |
|---|---|
| 0.01 | 0.0000396567 |
| 0.1 | 0.0003965667 |
| 1 | 0.0039656668 |
| 2 | 0.0079313337 |
| 5 | 0.0198283342 |
| 10 | 0.0396566683 |
| 25 | 0.0991416708 |
| 50 | 0.1982833416 |
| 100 | 0.3965666831 |
| 1,000 | 3.9656668314 |
From unit
Exactly 4.184 joules.
Symbol: cal
To unit
The International Table British thermal unit.
Symbol: BTUₕᵀ
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 BTUₕᵀ = cal x 0.003965666831. 1 thermochemical calorie (cal) equals 0.003965666831 btu (international table) (BTUₕᵀ).
The thermochemical calorie and International Table BTU are named explicitly to avoid ambiguous legacy definitions.
