Convert calorie (thermochemical)s to megajoules
1 cal = 0.000004184 MJ — 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 megajoules
Multiply the number of calorie (thermochemical)s by 0.000004184 to get megajoules.
The exact factor is 0.000004184 — as a fraction, 523/125000000.
Calorie (thermochemical): Exactly 4.184 J. The "small" calorie.
Calorie (thermochemical) to Megajoule conversion table
| Calorie (thermochemical)s (cal) | Megajoules (MJ) |
|---|---|
| 1 cal | 0.000 004 184 |
| 2 cal | 0.000 008 368 |
| 3 cal | 0.000 012 552 |
| 5 cal | 0.000 020 92 |
| 10 cal | 0.000 041 84 |
| 20 cal | 0.000 083 68 |
| 25 cal | 0.000 104 6 |
| 50 cal | 0.000 209 2 |
| 100 cal | 0.000 418 4 |
| 250 cal | 0.001 046 |
| 500 cal | 0.002 092 |
| 1000 cal | 0.004 184 |
Megajoule to Calorie (thermochemical) conversion table
| Megajoules (MJ) | Calorie (thermochemical)s (cal) |
|---|---|
| 1 MJ | 239 005.74 |
| 2 MJ | 478 011.47 |
| 3 MJ | 717 017.21 |
| 5 MJ | 1 195 028.7 |
| 10 MJ | 2 390 057.4 |
| 20 MJ | 4 780 114.7 |
| 25 MJ | 5 975 143.4 |
| 50 MJ | 11 950 287 |
| 100 MJ | 23 900 574 |
| 250 MJ | 59 751 434 |
| 500 MJ | 119 502 870 |
| 1000 MJ | 239 005 740 |
Frequently asked
How many megajoules are in a calorie (thermochemical)?
One calorie (thermochemical) equals 0.000004184 megajoules (cal → MJ). That figure is exact, not rounded.
How do you convert calorie (thermochemical)s to megajoules?
Multiply the number of calorie (thermochemical)s by 0.000004184 to get megajoules.
What is 1 MJ in calorie (thermochemical)s?
One megajoule is 239005.7361 calorie (thermochemical)s.
What is 10 cal in MJ?
10 cal = 0.000 041 84 MJ.
What exactly is a calorie (thermochemical)?
Exactly 4.184 J. The "small" calorie.