100 Calories (nutritional) to Joules

100 Cal = 418400 J

Calculation: J = 100 Cal × 4184 = 418400 J

Calorie (nutritional) to Joule Converter

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How much energy is 100 Cal?

100 Cal (418.4 kJ) is comparable to the energy content of a small snack like a cookie (30-120 kcal).

What does 100 Cal look like?

Comparable to the energy content of a small snack like a cookie (30-120 kcal)
100 Cal (418.4 kJ) is comparable to the energy content of a small snack like a cookie (30-120 kcal).

How to Convert Calorie (nutritional) to Joule

1 calorie (nutritional) = 4184 Joules exact

Joule = Calorie (nutritional) × 4184

Example: 100 Cal × 4184 = 418400 J

Reverse Conversion

To convert Joules back to calories (nutritional):

  • Remember, 1 joule equals 0.000239006 calories (nutritional).
  • To convert 418400 J to Cal, multiply 418400 x 0.000239006, resulting in 100 Cal.

exact This conversion factor is exact by international definition.

100 Cal is also equal to:

  • 418.4 kilojoule
  • 0.11622 kilowatt hour
  • 396.57 Btu
  • 116.22 watt hour

Frequently Asked Questions

How much is 100 calories (nutritional) in Joules?

100 calories (nutritional) equals 418400 Joules. This is calculated by multiplying 100 by the conversion factor 4184.

What does 100 calories (nutritional) look like in Joules?

100 calories (nutritional) equals 418400 Joules, a conversion used in nutrition calculations, electrical energy billing, and thermal engineering.

How do you calculate 100 calories (nutritional) to Joules?

Multiply 100 by the conversion factor 4184. The calculation is 100 × 4184 = 418400 Joules. This factor is defined by international measurement standards.

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100 calories (nutritional) = 418400 Joules
100 calories (nutritional) = 418400 Joules — conversion chart

For general conversions between calories (nutritional) and Joules, see the calories (nutritional) to Joules converter.

Also convert Calories (nutritional) to:

Conversion factors verified against NIST, BIPM, ISO 80000-4 1 cal_IT = 4.1868 J by definition (BIPM/ITS-90). Last reviewed: April 2026
Adilson Fernandes By Adilson Fernandes
Tiago Fernandes Reviewed by Tiago Fernandes

All unit conversions on CoolConversion use conversion factors defined or documented by internationally recognised standards bodies (such as ISO and NIST), including both SI and non-SI units.