Kilocalorie to Therm Converter

Energy Converter

27 units available

Decimals:

From

To

3.965667e-5

1 kcal = 3.965667e-5 thm

Formula:

thm = kcal × 0.0000396567

With your value: 1 kcal = 3.965667e-5 thm

How big is that?

Everyday references on a logarithmic scale, all expressed in kilocalorie so you can sanity-check the result.

Heartbeat (1/4.2e+3 your value)0.000239 kcal

Your value1.00 kcal

AA battery charge (2.4× your value)2.39 kcal

Slice of bread (67× your value)66.9 kcal

Daily food intake (2.0e+3× your value)2.01e+3 kcal

Litre of petrol (8.2e+3× your value)8.17e+3 kcal

Other Kilocalorie to Therm conversions

2 kcal to thm 3 kcal to thm 4 kcal to thm 5 kcal to thm 6 kcal to thm 7 kcal to thm 8 kcal to thm

Kilocalorie to Therm Conversion Table

Kilocalorie (kcal)	Therm (thm)
0.5	1.982833e-5
1	3.965667e-5
2	7.931334e-5
5	0.000198
10	0.000397
15	0.000595
20	0.000793
25	0.000991
50	0.001983
100	0.003966
250	0.009914
500	0.019828
1000	0.039657

Therm to Kilocalorie Conversion Table

Therm (thm)	Kilocalorie (kcal)
0.5	12,608.220036
1	25,216.440072
2	50,432.880144
5	126,082.200361
10	252,164.400722
15	378,246.601083
20	504,328.801444
25	630,411.001804
50	1,260,822.003609
100	2,521,644.007218
250	6,304,110.018045
500	12,608,220.03609
1000	25,216,440.07218

Where these values come from

Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.

Kilocalorie (kcal)

Energy

Exact conversion

Derived from the joule (1 J = 1 kg·m²/s²). Thermochemical and IT calories, BTU and kWh are exact defined multiples.

Source: NIST Special Publication 811, Guide for the Use of the International System of Units

National Institute of Standards and Technology (US) · Reviewed 2026-07-01

Therm (thm)

Energy

Exact conversion

Derived from the joule (1 J = 1 kg·m²/s²). Thermochemical and IT calories, BTU and kWh are exact defined multiples.

Source: NIST Special Publication 811, Guide for the Use of the International System of Units

National Institute of Standards and Technology (US) · Reviewed 2026-07-01

How to Convert Kilocalorie to Therm

To convert from Kilocalorie (kcal) to Therm (thm), multiply the value by 3.965667e-5.

Formula: thm = kcal × 0.0000396567

Reverse: kcal = thm × 25,216.4400721797

Step-by-Step Example

Start with your value in Kilocalorie. For example: 5 kcal
Multiply by the conversion factor: 5 x 3.965667e-5
The result is: 0.000198 thm

About Kilocalorie

The kilocalorie (food Calorie) equals 1,000 calories or 4,184 joules. It is the standard unit for food energy content.

Common uses: nutrition, diet, food labeling.

About Therm

The therm (thm) is a unit of energy and work. One therm equals 1.055056 × 10^+8 joules. UnitConvertLab converts it against every other energy unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: energy calculations, engineering and science, education.

Frequently Asked Questions

How many Therm are in 1 Kilocalorie?

There are exactly 3.965667e-5 Therm in 1 Kilocalorie. This means the conversion factor from Kilocalorie to Therm is 3.965667e-5.

What is the formula to convert Kilocalorie to Therm?

The formula to convert Kilocalorie to Therm is: thm = kcal × 0.0000396567. For example, to convert 10 Kilocalorie to Therm, you would multiply 10 by 3.965667e-5.

What is a Kilocalorie?