kcal to Therms Converter (kcal to thm)

How to convert kilocalories to therms

Formulathm = kcal × 0.00003966613703

Multiply the value in kilocalories by 0.00003966613703. To go the other way, multiply by 25,210.42065 (or divide by 0.00003966613703).

A kilocalorie is smaller than a therm: it takes 25,210.42065 kilocalories to make one therm.

Worked examples

1 kilocalorie (food Calorie)1 kcal × 0.00003966613703 = 0.00003966613703 thm
5 kilocalories5 kcal × 0.00003966613703 = 0.0001983306851 thm
10 kilocalories10 kcal × 0.00003966613703 = 0.0003966613703 thm
20 kilocalories20 kcal × 0.00003966613703 = 0.0007933227405 thm
100 kilocalories100 kcal × 0.00003966613703 = 0.003966613703 thm

Kilocalories to therms conversion table

Values are calculated by the conversion engine and rounded to 8 significant figures.

Kilocalories to therms: 0.1–10 kcal
Kilocalories (kcal)	Therms (thm)
0.1 kcal	0.0000039666137 thm
0.25 kcal	0.0000099165343 thm
0.5 kcal	0.000019833069 thm
1 kcal	0.000039666137 thm
2 kcal	0.000079332274 thm
3 kcal	0.00011899841 thm
4 kcal	0.00015866455 thm
5 kcal	0.00019833069 thm
6 kcal	0.00023799682 thm
7 kcal	0.00027766296 thm
8 kcal	0.0003173291 thm
9 kcal	0.00035699523 thm
10 kcal	0.00039666137 thm

Kilocalories to therms: 12–1,000 kcal
Kilocalories (kcal)	Therms (thm)
12 kcal	0.00047599364 thm
15 kcal	0.00059499206 thm
20 kcal	0.00079332274 thm
25 kcal	0.00099165343 thm
30 kcal	0.0011899841 thm
40 kcal	0.0015866455 thm
50 kcal	0.0019833069 thm
75 kcal	0.0029749603 thm
100 kcal	0.0039666137 thm
250 kcal	0.0099165343 thm
500 kcal	0.019833069 thm
1,000 kcal	0.039666137 thm

About the units

Kilocalorie (kcal)

One thousand small calories, or 4,184 J. The “Calories” on nutrition labels are kilocalories.

Therm (thm)

The US therm is 105,480,400 J, about 100,000 BTU. US gas utilities bill by the therm.

Frequently asked questions

How many therms are in one kilocalorie?

There are 0.00003966613703 therms in one kilocalorie, and this value is exact by definition.

How do I convert kilocalories to therms?

Multiply the number of kilocalories by 0.00003966613703. For example, 10 kcal × 0.00003966613703 = 0.0003966613703 thm.

How many kilocalories are in one therm?

One therm equals 25,210.42065 kilocalories. That is the reverse factor, 1 ÷ 0.00003966613703.

What is 10 kilocalories in therms?

10 kcal = 0.0003966613703 thm.

Is this kcal to thm converter accurate?

Yes. Both units are defined exactly in terms of SI units, so the conversion factor is exact; results are shown to 12 significant figures by default and you can change precision in the converter. Calculations run in your browser using the same tested engine that generated this page.

kcal to Therms Converter