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Kilocalories to Therms Converter

Convert kilocalories (food Calories) (kcal) 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.
The unit you want the answer in. Swap exchanges the two units.
Result
3.96566683139 × 10⁻⁵ thm
joules (watt-seconds)
4,184 J
kilojoules
4.184 kJ
megajoules
0.004184 MJ
gigajoules
4.184 × 10⁻⁶ GJ
calories (thermochemical)
1,000 cal
megacalories
0.001 Mcal
watt-hours
1.16222222222 Wh
kilowatt-hours
0.00116222222222 kWh
megawatt-hours
1.16222222222 × 10⁻⁶ MWh
British thermal units (IT)
3.96566683139 Btu
million Btu
3.96566683139 × 10⁻⁶ MMBtu
quads (10¹⁵ Btu)
3.96566683139 × 10⁻¹⁵ quad
electronvolts
2.61144739675 × 10²² eV
kiloelectronvolts
2.61144739675 × 10¹⁹ keV
megaelectronvolts
2.61144739675 × 10¹⁶ MeV

1 kcal = 3.96566683139 × 10⁻⁵ thm

Show the working
  1. 1 kcal = 3.96566683139e-5 thm
  2. 1 × 3.96566683139e-5 = 3.96566683139e-5 thm

How to convert kilocalories to therms

1 kcal = 3.96566683139 × 10⁻⁵ thm, so multiply by 3.96566683139 to go from kilocalories (food Calories) to therms (100,000 Btu). Going the other way, 1 thm = 25,216.4400722 kcal.

thm = kcal × 3.96566683139
kcal = thm × 25,216.4400722

Worked example:

1 kcal = 3.96566683139e-5 thm
5 × 3.96566683139e-5 = 0.00019828334157 thm

Kilocalories to therms table

KilocaloriesTherms
1 kcal3.96566683139 × 10⁻⁵ thm
2 kcal7.93133366278 × 10⁻⁵ thm
3 kcal0.000118970004942 thm
4 kcal0.000158626673256 thm
5 kcal0.00019828334157 thm
6 kcal0.000237940009883 thm
7 kcal0.000277596678197 thm
8 kcal0.000317253346511 thm
9 kcal0.000356910014825 thm
10 kcal0.000396566683139 thm
15 kcal0.000594850024709 thm
20 kcal0.000793133366278 thm
25 kcal0.000991416707848 thm
30 kcal0.00118970004942 thm
40 kcal0.00158626673256 thm
50 kcal0.0019828334157 thm
75 kcal0.00297425012354 thm
100 kcal0.00396566683139 thm
250 kcal0.00991416707848 thm
500 kcal0.019828334157 thm
1000 kcal0.0396566683139 thm

About the units

Kilocalories (kcal)
Kilocalories (food Calories), 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