How to Convert Kilocalories to Joules
To convert kilocalories to joules, multiply the value by 4184.
The Formula
Joules = Kilocalories × 4184
Key Fact
1 kilocalorie = 4184 joules
Tip: To convert joules back to kilocalories, divide by 4184.
Kilocalories to Joules
Convert kilocalories (kcal) to joules (J) with formulas, examples, and conversion tables.
kcal
J
1 kcal = 4184 J
Full precision:4184 J
Step-by-Step Solution
To convert 1 kilocalories to joules, we multiply by 4184 because one kilocalorie equals exactly 4184 joules.
1 kilocalorie = 4184 joules
Since each kilocalorie contains 4184 joules, we multiply our value by this factor:
1 × 4184 = 4184 joules
So 1 kilocalories = 4184 joules.
Quick check: 4184 ÷ 4184 = 1 kilocalories
Example Conversions
Example 1: 1 kcal = 4184 J
1 × 4184 = 4184
1 × 4184 = 4184
Example 2: 5 kcal = 20920 J
5 × 4184 = 20920
5 × 4184 = 20920
Example 3: 10 kcal = 41840 J
10 × 4184 = 41840
10 × 4184 = 41840
Kilocalories to Joules Table
| Kilocalories | Joules |
|---|---|
| 1 kcal | 4184 J |
| 2 kcal | 8368 J |
| 5 kcal | 20920 J |
| 10 kcal | 41840 J |
| 20 kcal | 83680 J |
| 25 kcal | 104600 J |
| 50 kcal | 209200 J |
| 100 kcal | 418400 J |
| 250 kcal | 1046000 J |
| 500 kcal | 2092000 J |
| 1000 kcal | 4184000 J |
1 Kilocalorie in Other Units
| Unit | 1 kcal = |
|---|---|
| Kilocalories to Joules | 4184 J |
| Kilocalories to Kilojoules | 4.184 kJ |
| Kilocalories to Megajoules | 0.004184 MJ |
| Kilocalories to Gigajoules | 0.00000418 GJ |
| Kilocalories to Watt-hours | 1.1622 Wh |
| Kilocalories to Kilowatt-hours | 0.0011622 kWh |
| Kilocalories to Megawatt-hours | 0.00000116 MWh |
| Kilocalories to Calories | 1000 cal |
| Kilocalories to BTU | 3.9657 BTU |
| Kilocalories to Therms | 0.00003966 therm |
| Kilocalories to Foot-pounds | 3085.96 ft·lb |
| Kilocalories to Electronvolts | 2.6114e+22 eV |
| Kilocalories to Ergs | 4.184e+10 erg |