Therm to Millijoule Converter

Energy Converter

27 units available

Decimals:

From

To

105,505,585,262

1 thm = 105,505,585,262 mJ

Formula:

mJ = thm × 1.055056e+11

With your value: 1 thm = 105,505,585,262 mJ

How big is that?

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

Heartbeat (1/1.1e+8 your value)9.48e-9 thm

AA battery charge (1/1.1e+4 your value)0.0000948 thm

Slice of bread (1/3.8e+2 your value)0.00265 thm

Daily food intake (1/13 your value)0.0796 thm

Litre of petrol (1/3.1 your value)0.324 thm

Your value1.00 thm

Other Therm to Millijoule conversions

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

Therm to Millijoule Conversion Table

Therm (thm)	Millijoule (mJ)
0.5	52,752,792,631
1	105,505,585,262
2	211,011,170,524
5	527,527,926,309.99994
10	1.055056e+12
15	1.582584e+12
20	2.110112e+12
25	2.637640e+12
50	5.275279e+12
100	1.055056e+13
250	2.637640e+13
500	5.275279e+13
1000	1.055056e+14

Millijoule to Therm Conversion Table

Millijoule (mJ)	Therm (thm)
0.5	4.739086e-12
1	9.478171e-12
2	1.895634e-11
5	4.739086e-11
10	9.478171e-11
15	1.421726e-10
20	1.895634e-10
25	2.369543e-10
50	4.739086e-10
100	9.478171e-10
250	2.369543e-9
500	4.739086e-9
1000	9.478171e-9

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.

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

Millijoule (mJ)

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 Therm to Millijoule

To convert from Therm (thm) to Millijoule (mJ), multiply the value by 105,505,585,262.

Formula: mJ = thm × 1.055056e+11

Reverse: thm = mJ × 9.478171e-12

Step-by-Step Example

Start with your value in Therm. For example: 5 thm
Multiply by the conversion factor: 5 x 105,505,585,262
The result is: 527,527,926,309.99994 mJ

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.

About Millijoule

The millijoule (mJ) is a unit of energy and work. One millijoule equals 0.001 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 Millijoule are in 1 Therm?

There are exactly 105,505,585,262 Millijoule in 1 Therm. This means the conversion factor from Therm to Millijoule is 105,505,585,262.

What is the formula to convert Therm to Millijoule?

The formula to convert Therm to Millijoule is: mJ = thm × 1.055056e+11. For example, to convert 10 Therm to Millijoule, you would multiply 10 by 105,505,585,262.

What is a Therm?