How many joules are in a calorie (thermochemical)?
There are 4.184 joules in 1 thermochemical calorie (cal).
Detailed answer
This converter uses the thermochemical calorie: 1 cal = 4.184 J exactly. Multiply calories by 4.184 to get joules; divide joules by 4.184 to get calories. Do not confuse the small calorie (cal) with the food kilocalorie (kcal).
Relationship context
Nutrition labels in many regions use kcal but print “Calorie”; chemistry and physics problems often use cal or kcal with the same 4.184 J per cal step.
Quick conversion table
| Calorie (cal) | Joule (j) |
|---|---|
| 0.1 | 0.4184 |
| 1 | 4.184 |
| 2 | 8.368 |
| 3 | 12.552 |
| 4 | 16.736 |
| 5 | 20.92 |
| 6 | 25.104 |
| 7 | 29.288 |
| 8 | 33.472 |
| 9 | 37.656 |
| Calorie (cal) | Joule (j) |
|---|---|
| 10 | 41.84 |
| 20 | 83.68 |
| 30 | 125.52 |
| 40 | 167.36 |
| 50 | 209.2 |
| 60 | 251.04 |
| 70 | 292.88 |
| 80 | 334.72 |
| 90 | 376.56 |
| 100 | 418.4 |
More Calories converters
Dedicated pages from Calorie to every other hub energy unit (kilocalorie, kilowatt-hour, calorie, joule, kilojoule, watt-hour, BTU, electronvolt).
- calorie to toe (Calorie to Ton of Oil Equivalent)
- calorie to gigajoule (Calorie to Gigajoule)
- calorie to mmbtu (Calorie to Million BTU (MMBtu, IT))
- calorie to therm (Calorie to Therm)
- calorie to kilowatt-hour (Calorie to Kilowatt Hour)
- calorie to kilowatt-hour-thermal (Calorie to Kilowatt-hour (thermal))
- calorie to megajoule (Calorie to Megajoule)
- calorie to kilocalorie (Calorie to Kilocalorie)
- calorie to watt-hour (Calorie to Watt Hour)
- calorie to kilojoule (Calorie to Kilojoule)
- calorie to btu (Calorie to British Thermal Unit)
- calorie to foot-pound (Calorie to Feet-Pound)
- calorie to joule (Calorie to Joule)
- calorie to gigaelectronvolt (Calorie to Gigaelectronvolt)
- calorie to megaelectronvolt (Calorie to Megaelectronvolt)
- calorie to electronvolt (Calorie to Electronvolt)