kilocalories (food calories) (kcal)

kilocalories (food calories) as a conversion hub: 6 direct pairs, all with the exact factor on the page.

Definition1 kcal = 4.184 kJ exactly

CategoryEnergy Converter

Pairs from here6

Energy Converter

—

kilocalories (food calories) converted to every other unit

kcal	J	kJ	cal	Wh	kWh	Btu
1 kcal	4,184	4.184	1,000	1.162222	0.0011622222	3.965667
2 kcal	8,368	8.368	2,000	2.324444	0.0023244444	7.931334
5 kcal	20,920	20.92	5,000	5.811111	0.0058111111	19.828334
10 kcal	41,840	41.84	10,000	11.622222	0.01162222	39.656668
20 kcal	83,680	83.68	20,000	23.244444	0.02324444	79.313337
50 kcal	209,200	209.2	50,000	58.111111	0.05811111	198.283
100 kcal	418,400	418.4	100,000	116.222	0.11622222	396.567

All conversions starting from kcal

kcal to J kcal to kJ kcal to cal kcal to Wh kcal to kWh kcal to Btu

Questions

How do I convert from kilocalories (food calories)?

Pick the target unit from the table on this page, or open the dedicated pair page — each one carries a converter, a table of common values and the exact factor.

Is kilocalory exact or approximate?

The factor shown (1 kcal = 4.184 kJ) is fixed by definition, so conversions are exact rather than measured.

What is kilocalory used for?

food energy on nutrition labels