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Therms to Calories Converter

Convert therms (100,000 Btu) (thm) to calories (thermochemical) (cal), 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.
The unit you want the answer in. Swap exchanges the two units.
Result
25,216,440.0722 cal
joules (watt-seconds)
105,505,585.262 J
kilojoules
105,505.585262 kJ
megajoules
105.505585262 MJ
gigajoules
0.105505585262 GJ
kilocalories (food Calories)
25,216.4400722 kcal
megacalories
25.2164400722 Mcal
watt-hours
29,307.1070172 Wh
kilowatt-hours
29.3071070172 kWh
megawatt-hours
0.0293071070172 MWh
British thermal units (IT)
100,000 Btu
million Btu
0.1 MMBtu
quads (10¹⁵ Btu)
1 × 10⁻¹⁰ quad
electronvolts
6.58514067819 × 10²⁶ eV
kiloelectronvolts
6.58514067819 × 10²³ keV
megaelectronvolts
6.58514067819 × 10²⁰ MeV

1 thm = 25,216,440.0722 cal

Show the working
  1. 1 thm = 25216440.0722 cal
  2. 1 × 25216440.0722 = 25216440.0722 cal

How to convert therms to calories

1 thm = 25,216,440.0722 cal, so multiply by 25,216,440.0722 to go from therms (100,000 Btu) to calories (thermochemical). Going the other way, 1 cal = 3.96566683139 × 10⁻⁸ thm.

cal = thm × 25,216,440.0722
thm = cal × 3.96566683139

Worked example:

1 thm = 25216440.0722 cal
5 × 25216440.0722 = 126082200.361 cal

Therms to calories table

ThermsCalories
1 thm25,216,440.0722 cal
2 thm50,432,880.1444 cal
3 thm75,649,320.2165 cal
4 thm100,865,760.289 cal
5 thm126,082,200.361 cal
6 thm151,298,640.433 cal
7 thm176,515,080.505 cal
8 thm201,731,520.577 cal
9 thm226,947,960.65 cal
10 thm252,164,400.722 cal
15 thm378,246,601.083 cal
20 thm504,328,801.444 cal
25 thm630,411,001.804 cal
30 thm756,493,202.165 cal
40 thm1,008,657,602.89 cal
50 thm1,260,822,003.61 cal
75 thm1,891,233,005.41 cal
100 thm2,521,644,007.22 cal
250 thm6,304,110,018.04 cal
500 thm12,608,220,036.1 cal
1000 thm25,216,440,072.2 cal

About the units

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.
Calories (cal)
Calories (thermochemical), a specialised unit. The thermochemical calorie, 4.184 J, used on US food labels as 1 Calorie = 1 kilocalorie. Definition: NIST SP 811 Appendix B.8, factors for units listed alphabetically.

Formula version 0.1.0Reviewed