Convert calorie (thermochemical)s to joules
1 cal = 4.184 J — exactly. Both units are defined against the SI, so this factor is a fraction, not an approximation.
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Show this value in all 39 energy & work units
- Petajoules PJ 4.184e-15
- Terajoules TJ 4.184e-12
- Gigajoules GJ 4.184e-9
- Megajoules MJ 0.000 004 184
- Kilojoules kJ 0.004 184
- Joules J 4.184
- Millijoules mJ 4184
- Microjoules µJ 4 184 000
- Nanojoules nJ 4 184 000 000
- Watt-hours Wh 0.001 162 222 222 22
- Kilowatt-hours kWh 0.000 001 162 222 222 22
- Megawatt-hours MWh 1.16222222222e-9
- Gigawatt-hours GWh 1.16222222222e-12
- Terawatt-hours TWh 1.16222222222e-15
- Calorie (thermochemical)s cal 1
- Kilocalories kcal 0.001
- Calorie (IT)s cal (IT) 0.999 331 231 489
- Kilocalorie (IT)s kcal (IT) 0.000 999 331 231 489
- British thermal units BTU 0.003 965 666 831 39
- BTU (thermochemical)s BTU (th) 0.003 968 321 714 8
- Million BTUs MMBTU 3.96566683139e-9
- Therm (US)s thm 3.96661370264e-8
- Therm (EC)s thm (EC) 3.96566627743e-8
- Electronvolts eV 2.61144739675e+19
- Kiloelectronvolts keV 2.61144739675e+16
- Megaelectronvolts MeV 26 114 473 967 500
- Gigaelectronvolts GeV 26 114 473 967.5
- Teraelectronvolts TeV 26 114 473.9675
- Ergs erg 41 840 000
- Foot-pounds ft·lbf 3.085 960 032 58
- Inch-pounds in·lbf 37.031 520 390 9
- Foot-poundals ft·pdl 99.287 827 931 3
- Horsepower-hours hp·h 0.000 001 558 565 673 02
- Tonne of TNTs t TNT 1e-9
- Kiloton of TNTs kt TNT 1e-12
- Megaton of TNTs Mt TNT 1e-15
- Hartrees Eₕ 9.59689217281e+17
- Rydbergs Ry 1.91937843456e+18
- Quads quad 3.96566683139e-18
Every row is Calorie (thermochemical) (cal) converted through the joule, in exact rational arithmetic.
How to convert calorie (thermochemical)s to joules
Multiply the number of calorie (thermochemical)s by 4.184 to get joules.
The exact factor is 4.184 — as a fraction, 523/125.
Calorie (thermochemical): Exactly 4.184 J. The "small" calorie.
Calorie (thermochemical) to Joule conversion table
| Calorie (thermochemical)s (cal) | Joules (J) |
|---|---|
| 1 cal | 4.184 |
| 2 cal | 8.368 |
| 3 cal | 12.552 |
| 5 cal | 20.92 |
| 10 cal | 41.84 |
| 20 cal | 83.68 |
| 25 cal | 104.6 |
| 50 cal | 209.2 |
| 100 cal | 418.4 |
| 250 cal | 1046 |
| 500 cal | 2092 |
| 1000 cal | 4184 |
Joule to Calorie (thermochemical) conversion table
| Joules (J) | Calorie (thermochemical)s (cal) |
|---|---|
| 1 J | 0.239 005 74 |
| 2 J | 0.478 011 47 |
| 3 J | 0.717 017 21 |
| 5 J | 1.195 028 7 |
| 10 J | 2.390 057 4 |
| 20 J | 4.780 114 7 |
| 25 J | 5.975 143 4 |
| 50 J | 11.950 287 |
| 100 J | 23.900 574 |
| 250 J | 59.751 434 |
| 500 J | 119.502 87 |
| 1000 J | 239.005 74 |
Frequently asked
How many joules are in a calorie (thermochemical)?
One calorie (thermochemical) equals 4.184 joules (cal → J). That figure is exact, not rounded.
How do you convert calorie (thermochemical)s to joules?
Multiply the number of calorie (thermochemical)s by 4.184 to get joules.
What is 1 J in calorie (thermochemical)s?
One joule is 0.2390057361 calorie (thermochemical)s.
What is 10 cal in J?
10 cal = 41.84 J.
What exactly is a calorie (thermochemical)?
Exactly 4.184 J. The "small" calorie.