/convert/joules-to-calories/ Convert joules to calories instantly. Enter any value and get the result. Includes a conversion table and the exact formula. article Joules to Calories Converter — 247QuickTools ,{ "@context": "https://schema.org", "@type": "SpeakableSpecification", "cssSelector": [".tool-intro", ".info-gain-section"] }
⚡ Energy

Joules to Calories Converter

Convert joules to calories instantly. Enter any value and get the result. Includes a conversion table and the exact formula.

Quick answer: To convert joules to calories, multiply by 0.239006. For example, 1 joules = 0.239006 calories. Use the calculator below for any value.
joules to calories
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Common conversions
Joules Calories
Formula:

How to convert joules to calories

1

Enter your value

Type the number of joules you want to convert into the left box. The result in calories appears instantly in the right box. You can also type into the right box to convert in the other direction.

2

Use the swap button

Click the ⇄ Swap button to reverse the conversion — Calories to Joules. Your current value carries across so you don't have to re-enter anything.

3

About Joules and Calories

joules and calories are both units of energy. Use this converter to switch between them instantly.

💡 Did you know?

1 calorie (small c) = 4.184 J. 1 food Calorie (capital C) = 1 kcal = 4,184 J. The small calorie is rarely used outside chemistry. Confusion: 'burning calories' in exercise means kcal. A 70 kg person burns about 60 kcal (60,000 small calories = 251,040 J) per hour at rest.

📊 Common conversions at a glance
Joules Calories
100 23.9
200 47.8
500 119.5
1000 239
2000 478
5000 1195
Reviewed for 2026. Joules ↔ Calories conversion factor verified against published reference data. Built by a UK-based qualified primary teacher and FA Level 2 coach as part of 247QuickTools' free utility-tools project.