1000 Calories to Joules
1000 cal = 4184 J
1000 calories equals 4184 joules.
How to convert 1000 cal to J
Use the formula J = cal × 4.184:
J = 1000 × 4.184J = 4184
So 1000 cal = 4184 J.
Rounded values and quick estimate
- Rounded to a whole number: 4,184 J
- Rounded to one decimal place: 4,184 J
- Conversion factor: 1 calorie = 4.18 joules
This conversion is exact, so there is no need to estimate: just multiply by 4.184.
1000 Calories in other units
- Joules
- 4184 J
- Kilojoules
- 4.18 kJ
- Kilocalories (food Calories)
- 1 kcal
- US therms
- 0.00004 thm
- Kilowatt-hours
- 0.001162 kWh
1000 cal and nearby values
| Calories | Joules |
|---|---|
| 996 cal | 4167.26 J |
| 997 cal | 4171.45 J |
| 998 cal | 4175.63 J |
| 999 cal | 4179.82 J |
| 1000 cal | 4184 J |
| 1001 cal | 4188.18 J |
| 1002 cal | 4192.37 J |
| 1003 cal | 4196.55 J |
| 1004 cal | 4200.74 J |
About calories and joules
The small (thermochemical) calorie is exactly 4.184 joules — the energy to warm 1 gram of water by about 1 °C.
The joule is the SI unit of energy. One food Calorie (kcal) equals 4,184 joules.
Related conversions
Frequently asked questions
What is 1000 Calories in Joules?
1000 calories is 4184 joules (1000 cal = 4184 J).
How do you convert 1000 cal to J?
Apply J = cal × 4.184: J = 1000 × 4.184, J = 4184.
How many calories is 4184 J?
4184 J is about 1000 calories.