Energy Converter

Convert between chemical, electrical and physical energy units.

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Formula

J = cal × 4.184

Example

Example: convert 10 calories to joules.

10 cal = 41.84 J

Conversion table

calories (cal) joules (J)
1 cal 4.184 J
2 cal 8.368 J
5 cal 20.92 J
10 cal 41.84 J
20 cal 83.68 J
50 cal 209.2 J
100 cal 418.4 J

Explanation

These are both units.

How to convert calories to joules

  1. Start with the value in calories (cal).
  2. Multiply it by 4.184.
  3. The result is the measurement in joules (J).

Example: 10 cal → 41.84 J

Frequently Asked Questions

How much is 10 calories in joules?

10 calories equals 41.84 joules.

How many joules is 1 calorie?

1 calorie equals 4.184 joules.

How many calories is 1 joule?

1 joule equals 0.239005736138 calories.

What is the difference between calories and joules?

Both measure energy in SI. The main difference is usually scale: some units are convenient for smaller values, while others are used to express larger values more practically.

Where are calories and joules used?

They are used in physics and engineering to measure work, energy, and heat; the most practical unit depends on the magnitude.

Why does 1 calorie equal 4.184 joules?

Because the units are defined with a fixed relationship. To convert calories to joules, multiply by that factor.