kcal to kJ
1 kcal (kcal) equals 4.184 kJ (kJ). Type a value into either box below for an instant two-way conversion. For other units, use the full unit converter.
Chinese version: 千卡转千焦
Conversion factor
1 kcal = 4.184 kJ
Reverse: 1 kJ = 0.239 kcal
kcal to kJ converter
kcal（kcal）
kJ（kJ）
kcal to kJ conversion table
| kcal | kJ | Detail |
|---|---|---|
| 1 | 4.184 | 1 kcal to kJ |
| 10 | 41.84 | 10 kcal to kJ |
| 50 | 209.2 | 50 kcal to kJ |
| 100 | 418.4 | 100 kcal to kJ |
| 150 | 627.6 | 150 kcal to kJ |
| 200 | 836.8 | 200 kcal to kJ |
| 250 | 1,046 | 250 kcal to kJ |
| 300 | 1,255.2 | 300 kcal to kJ |
| 400 | 1,673.6 | 400 kcal to kJ |
| 500 | 2,092 | 500 kcal to kJ |
| 600 | 2,510.4 | 600 kcal to kJ |
| 700 | 2,928.8 | 700 kcal to kJ |
| 800 | 3,347.2 | 800 kcal to kJ |
| 1,000 | 4,184 | 1,000 kcal to kJ |
| 1,500 | 6,276 | 1,500 kcal to kJ |
| 2,000 | 8,368 | 2,000 kcal to kJ |
| 2,500 | 10,460 | 2,500 kcal to kJ |
| 3,000 | 12,552 | 3,000 kcal to kJ |
| 5,000 | 20,920 | 5,000 kcal to kJ |
How to convert
To convert kcal to kJ, multiply: kJ = kcal × 4.184
To convert kJ to kcal, divide: kcal = kJ ÷ 4.184 (equivalently × 0.239).
Example: 100 kcal × 4.184 = 418.4 kJ. The factor is derived from the international definition of each unit; results are shown to 4 significant figures.
Frequently asked questions
100 kcal = 418.4 kJ. The formula is: value in kcal × 4.184 = value in kJ. Use the converter above to convert any value instantly.
1 kJ = 0.239 kcal. To convert back, divide the kJ value by 4.184 (or multiply by 0.239).
kJ = kcal × 4.184; conversely kcal = kJ ÷ 4.184. For example, 100 kcal × 4.184 = 418.4 kJ. The factor comes from the international definition of the units.
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Disclaimer: conversion factors are derived from international unit definitions and results are for reference only. For trade settlement, engineering or legal documents, follow the contract or official metrology standards.