Convert calorie (thermochemical) to joule instantly. Type in either field — results update live.
Selected cal (th) values converted to J using the exact factor from this tool.
| cal (th) | J |
|---|---|
| 0.01 | 0.04184 |
| 0.1 | 0.4184 |
| 1 | 4.184 |
| 2 | 8.368 |
| 3 | 12.552 |
| 5 | 20.92 |
| 10 | 41.84 |
| 20 | 83.68 |
| 50 | 209.2 |
| 100 | 418.4 |
| 1,000 | 4,184 |
Exact conversion factors in both directions, plus a worked example.
1 cal (th) = 4.184 J
1 J = 0.2390057361 cal (th)
To convert calorie (thermochemical) to joule, multiply by 4.184.
To convert joule to calorie (thermochemical), multiply by 0.2390057361.
Example: convert 10 cal (th) to J
10 × 4.184 = 41.84 J
Short background on the units used in this conversion.
The thermochemical calorie is exactly 4.184 joules — the heat needed to raise 1 g of water by 1°C (thermochemical definition).
Thermochemical calories appear in chemistry and physics; do not confuse with food Calories (kilocalories).
The joule is the SI unit of energy — the work done when one newton moves an object one meter.
Joules quantify electricity bills (as kWh), food energy (as kcal), and scientific energy transfers.
J = cal (th) × 4.184cal (th) = J × 0.2390057361, using the same exact factors as this converter.Jump to any energy conversion starting from calorie (thermochemical) — including the reverse direction and every other unit in our dataset.