Kilocalories to Joules Converter
1 kilocalorie (kcal) equals 4,184 joules (J).
Quick answer
- 1 kilocalorie = 4,184 joules
- 1 joule = 0.000239005736 kilocalories
- Formula: J = kcal × 4,184
1 kilocalorie = 4,184 joules
How to convert kilocalories to joules
J = kcal × 4,184
To convert kilocalories to joules, multiply the number of kilocalories by 4,184.
Example: 42 kcal to J
- Start with the value in kilocalories: 42 kcal.
- Multiply by 4,184: 42 × 4,184 = 175,728.
- Result: 42 kilocalories = 175,728 joules.
Going the other way, 1 joule = 0.000239005736 kilocalories, so to convert joules back to kilocalories you divide by the same number. See joules to kilocalories.
Kilocalories to joules conversion table
| Kilocalories (kcal) | Joules (J) |
|---|---|
| 0.1 kcal | 418.4 J |
| 0.2 kcal | 836.8 J |
| 0.3 kcal | 1,255.2 J |
| 0.4 kcal | 1,673.6 J |
| 0.5 kcal | 2,092 J |
| 0.6 kcal | 2,510.4 J |
| 0.7 kcal | 2,928.8 J |
| 0.8 kcal | 3,347.2 J |
| 0.9 kcal | 3,765.6 J |
| 1 kcal | 4,184 J |
| 1.5 kcal | 6,276 J |
| 2 kcal | 8,368 J |
| 2.5 kcal | 10,460 J |
| 3 kcal | 12,552 J |
| 3.5 kcal | 14,644 J |
| 4 kcal | 16,736 J |
| 4.5 kcal | 18,828 J |
| 5 kcal | 20,920 J |
| 6 kcal | 25,104 J |
| 7 kcal | 29,288 J |
| 7.5 kcal | 31,380 J |
| 8 kcal | 33,472 J |
| 9 kcal | 37,656 J |
| 10 kcal | 41,840 J |
| 11 kcal | 46,024 J |
| 12 kcal | 50,208 J |
| 13 kcal | 54,392 J |
| 14 kcal | 58,576 J |
| 15 kcal | 62,760 J |
| 16 kcal | 66,944 J |
| 17 kcal | 71,128 J |
| 18 kcal | 75,312 J |
| 19 kcal | 79,496 J |
| 20 kcal | 83,680 J |
| 21 kcal | 87,864 J |
| 22 kcal | 92,048 J |
| 23 kcal | 96,232 J |
| 24 kcal | 100,416 J |
| 25 kcal | 104,600 J |
| 26 kcal | 108,784 J |
More kcal to J values
- 27 kcal
- 28 kcal
- 29 kcal
- 30 kcal
- 31 kcal
- 32 kcal
- 33 kcal
- 34 kcal
- 35 kcal
- 36 kcal
- 37 kcal
- 38 kcal
- 39 kcal
- 40 kcal
- 41 kcal
- 42 kcal
- 43 kcal
- 44 kcal
- 45 kcal
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- 48 kcal
- 49 kcal
- 50 kcal
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- 57 kcal
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- 62 kcal
- 63 kcal
- 64 kcal
- 65 kcal
- 66 kcal
- 67 kcal
- 68 kcal
- 69 kcal
- 70 kcal
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- 72 kcal
- 73 kcal
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- 78 kcal
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- 80 kcal
- 81 kcal
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- 86 kcal
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- 88 kcal
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- 90 kcal
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- 92 kcal
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- 94 kcal
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- 100 kcal
- 110 kcal
- 120 kcal
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- 140 kcal
- 150 kcal
- 160 kcal
- 170 kcal
- 180 kcal
- 190 kcal
- 200 kcal
- 210 kcal
- 220 kcal
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- 240 kcal
- 250 kcal
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- 280 kcal
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- 300 kcal
- 310 kcal
- 320 kcal
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- 360 kcal
- 370 kcal
- 380 kcal
- 390 kcal
- 400 kcal
- 410 kcal
- 420 kcal
- 430 kcal
- 440 kcal
- 450 kcal
- 460 kcal
- 470 kcal
- 480 kcal
- 490 kcal
- 500 kcal
- 600 kcal
- 700 kcal
- 800 kcal
- 900 kcal
- 1,000 kcal
- 1,200 kcal
- 1,500 kcal
- 2,000 kcal
- 2,500 kcal
- 3,000 kcal
- 4,000 kcal
- 5,000 kcal
- 10,000 kcal
What is a kilocalorie?
The kilocalorie is 1,000 calories, 4,184 joules, the energy needed to warm one kilogram of water by about 1 °C.
What is a joule?
The joule is the SI unit of energy, work and heat.
Convert kilocalories to other units
- Kilocalories to kilowatt-hours
- Kilocalories to British thermal units
- Kilocalories to calories
- Kilocalories to kilojoules
- Kilocalories to Calories (food)
- Kilocalories to electronvolts
- Kilocalories to watt-hours
- Kilocalories to foot-pounds
- Kilocalories to megajoules
- Kilocalories to therms
- All kilocalorie conversions →
Convert other units to joules
Frequently asked questions
How many joules are in a kilocalorie?
One kilocalorie is 4,184 joules.
How many kilocalories are in a joule?
One joule is 0.000239005736 kilocalories.
What is the formula to convert kilocalories to joules?
J = kcal × 4,184.