Convert kilocalories (food Calorie) (kcal) to joules (J).
Edit either value. Decimals and scientific notation supported.
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1 kcal ≈ 4184 J
Precision changes displayed rounding, not calculation accuracy.
J = kcal × 4184J = kcal × 4184
Multiply the kcal reading by 4184.
1 kcal ≈ 4184 J
1 × 4184 ≈ 4184
100 kcal ≈ 418400 J
100 × 4184 ≈ 418400
A food Calorie is a kilocalorie: 1 kcal = 1,000 cal. This tool uses the thermochemical calorie of exactly 4.184 J.
Fixed reference · Kilocalorie (food Calorie) to Joule
Reference values use this page’s named pair and default context. Calculator precision and font settings do not change this table.
| Kilocalorie (food Calorie) (kcal) | Joule (J) |
|---|---|
| 0 | 0 |
| 0.1 | 418.4 |
| 0.5 | 2092 |
| 1 | 4184 |
| 2 | 8368 |
| 5 | 20920 |
| 10 | 41840 |
| 25 | 104600 |
| 50 | 209200 |
| 100 | 418400 |
| 1000 | 4184000 |
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