How do I convert cal to j?

To convert Calorie to Joule: 1 cal = 4.184 J. Use the free converter at https://www.unit-converter.co/energy-converter/calories-to-joules

Calories to Joules (cal to J) Converter

Formula:1 cal = 4.184 J

⇄ Switch to Joules To Calories

Calorie

cal

Joule

Calorie to Joule — common values

1 cal4.184 J

100 cal418.4 J

1,000 cal4,184 J

3,600 cal15,062.4 J

10,000 cal41,840 J

1,000,000 cal4,184,000 J

3,600,000 cal15,062,400 J

Quick Answer— 1 cal = 4.184 J▾

1 cal = 4.184 J

1 calorie = 4.184 joules. 1 kilocalorie (food Calorie) = 4,184 joules.

How to convert Calories To Joules

1 cal = 4.184 J.

To convert calories to joules, use the formula: 1 cal = 4.184 J. Enter any value in the input field above and the result appears instantly. Click the ⇄ button to reverse the conversion direction.

All conversions use precise mathematical constants validated against international SI standards (NIST and ISO 80000), accurate to 8 significant figures.

Frequently Asked Questions

How many Joules are in one Calorie?

1 cal = 4.184 J. 1 calorie = 4.184 joules. 1 kilocalorie (food Calorie) = 4,184 joules.

What is the formula to convert Calorie to Joule?

1 cal = 4.184 J. Multiply the Calorie value by the conversion factor to get Joule.

How do I convert Joules To Calories?

Use the Joules To Calories converter — formula: 1 cal = 4.184 J. Click the ⇄ switch button above for the reverse conversion.

Is this Calorie to Joule converter free?

Yes — completely free, no registration required. Works instantly in your browser using precise mathematical constants validated against SI standards.

More Energy conversions

⇄Joules To Calories kWh To Joules BTU To Joules Joules To kWh Joules To BTU Kcal To Joules kWh To MJ BTU To kWh MJ To kWh

Need more energy conversions?

The full converter supports all unit combinations

Open full Energy converter →