1 joule (J) = 0.2390057361 calories (cal). To convert, divide by 4.184: cal = J ÷ 4.184. For example, 5 J = 1.195028681 cal.
cal = J ÷ 4.184
Joules to calories table
| Joules (J) | Calories (cal) |
|---|---|
| 1 | 0.2390057361 |
| 2 | 0.4780114723 |
| 3 | 0.7170172084 |
| 4 | 0.9560229446 |
| 5 | 1.195028681 |
| 10 | 2.390057361 |
| 20 | 4.780114723 |
| 25 | 5.975143403 |
| 50 | 11.95028681 |
| 100 | 23.90057361 |
| 250 | 59.75143403 |
| 500 | 119.5028681 |
| 1,000 | 239.0057361 |
The two units
Joule (J). The SI unit of energy: one newton acting over one meter.
Calorie (cal). The thermochemical calorie, exactly 4.184 joules. Food "Calories" are kilocalories.
Convert joules to other units
- Joules to kilojoules — 1 J = 0.001 kJ
- Joules to kilocalories — 1 J = 0.0002390057 kcal
- Joules to watt-hours — 1 J = 0.0002777778 Wh
- Joules to kilowatt-hours — 1 J = 2.777778e-7 kWh
- Joules to British thermal units — 1 J = 0.0009478171 BTU
- Joules to electronvolts — 1 J = 6.241509e+18 eV
Convert other units to calories
Questions people ask
- How many calories are in a joule?
- 0.2390057361.
- How do you convert joules to calories?
- cal = J ÷ 4.184. It is the same as dividing by 4.184.
- How do you convert calories back to joules?
- J = cal × 4.184. See calories to joules.
Results use the legal definitions of each unit and are checked against the Pint unit library. Display rounds to 10 significant digits. All unit conversions · More tools
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