How many Kilojoules are in one calorie?

There are 0.004184 Kilojoules in one calorie. This means 1 cal equals 0.004184 kJ.

What is the formula for calories to Kilojoules?

The conversion formula is: Kilojoules = calories × 0.004184. Simply multiply your value in calories by 0.004184 to get the result in Kilojoules.

Convert calories to Kilojoules (cal to kJ)

Use this tool to convert between energy units like Watt-second, Watt-minute, Watt-hour etc.

Amount

From

Result

0.04184

Use this calculator to convert calories (cal) to Kilojoules (kJ) with ease. Get accurate energy conversions instantly.

How to Convert calories to Kilojoules

Converting calories to Kilojoules is straightforward. The conversion formula is:

Kilojoules = calories × 0.004184

This means that 1 calorie equals 0.004184 Kilojoules. Conversely, 1 Kilojoule equals 239.00573613767 calories.

Example Calculation

To convert 10 calories to Kilojoules:

10 cal × 0.004184 = 0.04184 kJ

Common calories to Kilojoules Conversions

10 cal = 0.04184 kJ
50 cal = 0.2092 kJ
100 cal = 0.4184 kJ
500 cal = 2.092 kJ
1000 cal = 4.184 kJ

calories to Kilojoules Reference

The conversion ratio between calories and Kilojoules is:

1 cal = 0.004184 kJ
1 kJ = 239.00573613767 cal

Use this ratio to convert any value between these units.

Common Applications

Converting between calories and Kilojoules is frequently needed in:

Nutritional energy calculations
Physics and engineering
Renewable energy systems
Industrial power measurements

Whether you're working on a professional project or need conversions for everyday tasks, this energy converter provides accurate results instantly.

Frequently Asked Questions

How do you convert calories to Kilojoules?

To convert calories to Kilojoules, multiply the value by 0.004184. The formula is: Kilojoules = calories × 0.004184. For example, 100 cal = 0.4184 kJ.

How many Kilojoules are in 1 calorie?

There are 0.004184 Kilojoules in 1 calorie. This is the standard conversion factor for energy measurements.

What is the formula for converting cal to kJ?

The conversion formula is: kJ = cal × 0.004184. Simply multiply your calories value by 0.004184 to get the equivalent in Kilojoules.

How do you convert Kilojoules to calories?

To convert Kilojoules back to calories, multiply by 239.00573613767. The inverse formula is: calories = Kilojoules × 239.00573613767.

Is calories to Kilojoules conversion accurate?

Yes, this converter uses the standard international conversion factor of 0.004184, ensuring accurate and reliable results for all energy conversions.

When should I use calories vs Kilojoules?

calories and Kilojoules are different units of energy. Use calories for various applications and Kilojoules for various applications.

Quick Reference - cal to kJ

Quick reference table showing common calories to Kilojoules conversions. Use this chart for fast lookups of frequently used values.

cal	kJ
0.1 cal	0.0004184 kJ
0.2 cal	0.0008368 kJ
0.3 cal	0.0012552 kJ
0.4 cal	0.0016736 kJ
0.5 cal	0.002092 kJ
0.6 cal	0.0025104 kJ
0.7 cal	0.0029288 kJ
0.8 cal	0.0033472 kJ
0.9 cal	0.0037656 kJ

cal	kJ
1 cal	0.004184 kJ
2 cal	0.008368 kJ
3 cal	0.012552 kJ
4 cal	0.016736 kJ
5 cal	0.02092 kJ
6 cal	0.025104 kJ
7 cal	0.029288 kJ
8 cal	0.033472 kJ
9 cal	0.037656 kJ

cal	kJ
10 cal	0.04184 kJ
20 cal	0.08368 kJ
30 cal	0.12552 kJ
40 cal	0.16736 kJ
50 cal	0.2092 kJ
60 cal	0.25104 kJ
70 cal	0.29288 kJ
80 cal	0.33472 kJ
90 cal	0.37656 kJ

cal	kJ
100 cal	0.4184 kJ
200 cal	0.8368 kJ
300 cal	1.2552 kJ
400 cal	1.6736 kJ
500 cal	2.092 kJ
600 cal	2.5104 kJ
700 cal	2.9288 kJ
800 cal	3.3472 kJ
900 cal	3.7656 kJ

cal	kJ
1000 cal	4.184 kJ
2000 cal	8.368 kJ
3000 cal	12.552 kJ
4000 cal	16.736 kJ
5000 cal	20.92 kJ
6000 cal	25.104 kJ
7000 cal	29.288 kJ
8000 cal	33.472 kJ
9000 cal	37.656 kJ

cal	kJ
10000 cal	41.84 kJ
20000 cal	83.68 kJ
30000 cal	125.52 kJ
40000 cal	167.36 kJ
50000 cal	209.2 kJ
60000 cal	251.04 kJ
70000 cal	292.88 kJ
80000 cal	334.72 kJ
90000 cal	376.56 kJ

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