Gigajoule to Therm Converter

Energy Converter

27 units available

Decimals:

From

To

9.478171

1 GJ = 9.478171 thm

Formula:

thm = GJ × 9.4781712031

With your value: 1 GJ = 9.4781712 thm

How big is that?

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

Heartbeat (1/1.0e+9 your value)1.00e-9 GJ

AA battery charge (1/1.0e+5 your value)0.0000100 GJ

Slice of bread (1/3.6e+3 your value)0.000280 GJ

Daily food intake (1/1.2e+2 your value)0.00840 GJ

Litre of petrol (1/29 your value)0.0342 GJ

Your value1.00 GJ

Other Gigajoule to Therm conversions

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

Gigajoule to Therm Conversion Table

Gigajoule (GJ)	Therm (thm)
0.5	4.739086
1	9.478171
2	18.956342
5	47.390856
10	94.781712
15	142.172568
20	189.563424
25	236.95428
50	473.90856
100	947.81712
250	2,369.542801
500	4,739.085602
1000	9,478.171203

Therm to Gigajoule Conversion Table

Therm (thm)	Gigajoule (GJ)
0.5	0.052753
1	0.105506
2	0.211011
5	0.527528
10	1.055056
15	1.582584
20	2.110112
25	2.63764
50	5.275279
100	10.550559
250	26.376396
500	52.752793
1000	105.505585

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.

Gigajoule (GJ)

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 Gigajoule to Therm

To convert from Gigajoule (GJ) to Therm (thm), multiply the value by 9.4781712031.

Formula: thm = GJ × 9.4781712031

Reverse: GJ = thm × 0.1055055853

Step-by-Step Example

Start with your value in Gigajoule. For example: 5 GJ
Multiply by the conversion factor: 5 x 9.4781712031
The result is: 47.390856 thm

About Gigajoule

The gigajoule (GJ) is a unit of energy and work. One gigajoule equals 1.000000 × 10^+9 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 Gigajoule?

There are exactly 9.4781712031 Therm in 1 Gigajoule. This means the conversion factor from Gigajoule to Therm is 9.4781712031.

What is the formula to convert Gigajoule to Therm?

The formula to convert Gigajoule to Therm is: thm = GJ × 9.4781712031. For example, to convert 10 Gigajoule to Therm, you would multiply 10 by 9.4781712031.

What is a Gigajoule?