Convert calorie (thermochemical) to calorie (nutritional / food calorie) instantly. Type in either field — results update live.
Selected cal (th) values converted to Cal using the exact factor from this tool.
| cal (th) | Cal |
|---|---|
| 0.01 | 0.00001 |
| 0.1 | 0.0001 |
| 1 | 0.001 |
| 2 | 0.002 |
| 3 | 0.003 |
| 5 | 0.005 |
| 10 | 0.01 |
| 20 | 0.02 |
| 50 | 0.05 |
| 100 | 0.1 |
| 1,000 | 1 |
Exact conversion factors in both directions, plus a worked example.
1 cal (th) = 0.001 Cal
1 Cal = 1000 cal (th)
To convert calorie (thermochemical) to calorie (nutritional / food calorie), multiply by 0.001.
To convert calorie (nutritional / food calorie) to calorie (thermochemical), multiply by 1000.
Example: convert 10 cal (th) to Cal
10 × 0.001 = 0.01 Cal
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 food Calorie (capital C) equals one kilocalorie — 4,184 joules in this converter (thermochemical kcal, matching nutrition labels).
Food Calories label packaged meals, diet apps, and nutrition facts panels worldwide.
Cal = cal (th) × 0.001cal (th) = Cal × 1,000, 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.