Calorie (thermochemical) to Joule

1 cal = 4.184 J

Value

From

Precision & format

Significant figures

Notation

1 cal equals

4.184J

All 21 units

JouleJ
4.184
KilojoulekJ
0.004184
MegajouleMJ
0.000004184
GigajouleGJ
4.184 × 10⁻⁹
MillijoulemJ
4,184
Calorie (thermochemical)cal
exactly 4.184 J
1
Kilocalorie (thermochemical)kcal
food Calorie
0.001
Calorie (IT)cal (IT)
International Table
0.9993312315
Kilocalorie (IT)kcal (IT)
0.0009993312315
Watt-hourWh
0.001162222222
Kilowatt-hourkWh
0.000001162222222
Megawatt-hourMWh
1.162222222 × 10⁻⁹
BTU (IT)BTU
International Table
0.003965666831
BTU (thermochemical)BTU (th)
0.00396832072
Therm (US)thm
100 000 BTU
3.966613703 × 10⁻⁸
Foot-poundft·lbf
3.085960033
Ergerg
41,840,000
ElectronvolteV
2.611447397 × 10¹⁹
KiloelectronvoltkeV
2.611447397 × 10¹⁶
MegaelectronvoltMeV
26,114,473,970,000
Tonne of oil equivalenttoe
9.993312315 × 10⁻¹¹

Calorie (thermochemical) to Joule table

Common Calorie (thermochemical) values converted to Joule
Calorie (thermochemical) (cal)	Joule (J)
1	4.184
2	8.368
5	20.92
10	41.84
20	83.68
50	209.2
100	418.4
250	1,046
500	2,092
1,000	4,184

How the conversion works

Multiply the calorie (thermochemical) figure by 4.184 to get joule. Every factor on this site is anchored to the SI base unit for energy, so the same number is used everywhere it appears.

Going the other way, 1 J = 0.23900574 cal — see joule to calorie (thermochemical).

See all 21 energy units →