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Joule to Calorie

Convert joule (J) to calorie (cal) — with the exact factor, a quick-reference table and a free converter that works offline.

1 J = 0.2390057 cal

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Conversion table

Joule (J)Calorie (cal)
1 J0.2390057 cal
2 J0.4780115 cal
5 J1.195029 cal
10 J2.390057 cal
20 J4.780115 cal
50 J11.95029 cal
100 J23.90057 cal
500 J119.5029 cal

How the conversion works

Both units measure energy. One joule equals exactly 0.2390057 cal, so multiply by that factor to convert.

FAQ

How many calories in a joule?

1 J = 0.2390057 cal.

How do I convert joule to calorie?

Multiply the joule value by 0.2390057. For example, 10 J × 0.2390057 = 2.390057 cal.

Where does the factor come from?

The conversion factor is defined in BIPM SI Brochure; both units are energy units converted through joule.

Related conversions

Calorie to Joule Kilocalorie to Kilojoule Kilojoule to Kilocalorie Kilowatt-hour to British thermal unit

Conversion factors: BIPM SI Brochure. Computed by the same engine that powers the app.

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