Calorie (IT) to Therm Converter

Energy Converter

27 units available

Decimals:

From

To

3.968321e-8

1 cal (IT) = 3.968321e-8 thm

Formula:

thm = cal (IT) × 3.968321e-8

With your value: 1 cal (IT) = 3.968321e-8 thm

How big is that?

Everyday references on a logarithmic scale, all expressed in calorie (it) so you can sanity-check the result.

Heartbeat (1/4.2 your value)0.239 cal (IT)

Your value1.00 cal (IT)

AA battery charge (2.4e+3× your value)2.39e+3 cal (IT)

Slice of bread (6.7e+4× your value)6.69e+4 cal (IT)

Daily food intake (2.0e+6× your value)2.01e+6 cal (IT)

Litre of petrol (8.2e+6× your value)8.17e+6 cal (IT)

Other Calorie (IT) to Therm conversions

2 cal (IT) to thm 3 cal (IT) to thm 4 cal (IT) to thm 5 cal (IT) to thm 6 cal (IT) to thm 7 cal (IT) to thm 8 cal (IT) to thm

Calorie (IT) to Therm Conversion Table

Calorie (IT) (cal (IT))	Therm (thm)
0.5	1.984160e-8
1	3.968321e-8
2	7.936641e-8
5	1.984160e-7
10	3.968321e-7
15	5.952481e-7
20	7.936641e-7
25	9.920802e-7
50	1.984160e-6
100	3.968321e-6
250	9.920802e-6
500	1.984160e-5
1000	3.968321e-5

Therm to Calorie (IT) Conversion Table

Therm (thm)	Calorie (IT) (cal (IT))
0.5	12,599,788.055556
1	25,199,576.111111
2	50,399,152.222222
5	125,997,880.555556
10	251,995,761.111111
15	377,993,641.666667
20	503,991,522.222222
25	629,989,402.777778
50	1,259,978,805.555555
100	2,519,957,611.111111
250	6,299,894,027.777778
500	12,599,788,055.555555
1000	25,199,576,111.11111

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.

Calorie (IT) (cal (IT))

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 Calorie (IT) to Therm

To convert from Calorie (IT) (cal (IT)) to Therm (thm), multiply the value by 3.968321e-8.

Formula: thm = cal (IT) × 3.968321e-8

Reverse: cal (IT) = thm × 25,199,576.111111112

Step-by-Step Example

Start with your value in Calorie (IT). For example: 5 cal (IT)
Multiply by the conversion factor: 5 x 3.968321e-8
The result is: 1.984160e-7 thm

About Calorie (IT)

The calorie (it) (cal (IT)) is a unit of energy and work. One calorie (it) equals 4.1868 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.

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 Calorie (IT)?

There are exactly 3.968321e-8 Therm in 1 Calorie (IT). This means the conversion factor from Calorie (IT) to Therm is 3.968321e-8.

What is the formula to convert Calorie (IT) to Therm?

The formula to convert Calorie (IT) to Therm is: thm = cal (IT) × 3.968321e-8. For example, to convert 10 Calorie (IT) to Therm, you would multiply 10 by 3.968321e-8.

What is a Calorie (IT)?