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Megacalories to Therms Converter

Convert megacalories (Mcal) to therms (100,000 Btu) (thm), with the formula, a conversion table and exact factors.

Change the values and press Calculate to work out your own figures.

Enter an amount of energy, choose its unit and the unit you want. The answer is exact until it is shown, and the same value appears in every other unit.

A number, fraction (3/8), mixed number (1 1/2), scientific notation (2.5e6) or a simple sum such as 2*3.
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Result
0.0396566683139 thm
joules (watt-seconds)
4,184,000 J
kilojoules
4,184 kJ
megajoules
4.184 MJ
gigajoules
0.004184 GJ
calories (thermochemical)
1,000,000 cal
kilocalories (food Calories)
1,000 kcal
watt-hours
1,162.22222222 Wh
kilowatt-hours
1.16222222222 kWh
megawatt-hours
0.00116222222222 MWh
British thermal units (IT)
3,965.66683139 Btu
million Btu
0.00396566683139 MMBtu
quads (10¹⁵ Btu)
3.96566683139 × 10⁻¹² quad
electronvolts
2.61144739675 × 10²⁵ eV
kiloelectronvolts
2.61144739675 × 10²² keV
megaelectronvolts
2.61144739675 × 10¹⁹ MeV

1 Mcal = 0.0396566683139 thm

Show the working
  1. 1 Mcal = 0.0396566683139 thm
  2. 1 × 0.0396566683139 = 0.0396566683139 thm

How to convert megacalories to therms

1 Mcal = 0.0396566683139 thm, so multiply by 0.0396566683139 to go from megacalories to therms (100,000 Btu). Going the other way, 1 thm = 25.2164400722 Mcal.

thm = Mcal × 0.0396566683139
Mcal = thm × 25.2164400722

Worked example:

1 Mcal = 0.0396566683139 thm
5 × 0.0396566683139 = 0.19828334157 thm

Megacalories to therms table

MegacaloriesTherms
1 Mcal0.0396566683139 thm
2 Mcal0.0793133366278 thm
3 Mcal0.118970004942 thm
4 Mcal0.158626673256 thm
5 Mcal0.19828334157 thm
6 Mcal0.237940009883 thm
7 Mcal0.277596678197 thm
8 Mcal0.317253346511 thm
9 Mcal0.356910014825 thm
10 Mcal0.396566683139 thm
15 Mcal0.594850024709 thm
20 Mcal0.793133366278 thm
25 Mcal0.991416707848 thm
30 Mcal1.18970004942 thm
40 Mcal1.58626673256 thm
50 Mcal1.9828334157 thm
75 Mcal2.97425012354 thm
100 Mcal3.96566683139 thm
250 Mcal9.91416707848 thm
500 Mcal19.828334157 thm
1000 Mcal39.6566683139 thm

About the units

Megacalories (Mcal)
Megacalories, a specialised unit. Definition: NIST SP 811 Appendix B.8, factors for units listed alphabetically.
Therms (thm)
Therms (100,000 Btu), a US customary unit. The EC/IT therm; the US therm is 105,480,400 J, 0.02% smaller. Definition: NIST SP 811 Appendix B.8, factors for units listed alphabetically.

Formula version 0.1.0Reviewed