Therm to Gigajoule Converter

One Therm equals 0.1055055853 Gigajoule (1 therm = 0.1055055853 GJ). Multiply a Therm value by 0.1055055853 to get the equivalent in Gigajoule. Use the calculator above for instant results, or follow the formula, worked examples, and reference table below.

Formula

GJ = therm × 0.1055055853

Multiply the Therm value by 0.1055055853 to get the equivalent value in Gigajoule.

Example Conversions

1 Therm (therm)

0.1055055853 Gigajoule (GJ)

5 Therm (therm)

0.5275279263 Gigajoule (GJ)

10 Therm (therm)

1.055055853 Gigajoule (GJ)

25 Therm (therm)

2.637639632 Gigajoule (GJ)

100 Therm (therm)

10.55055853 Gigajoule (GJ)

Conversion Table

Common conversion values from Therm to Gigajoule
Therm (therm) Gigajoule (GJ)
0.1 0.01055055853
0.5 0.05275279263
1 0.1055055853
2 0.2110111705
5 0.5275279263
10 1.055055853
25 2.637639632
50 5.275279263
100 10.55055853
250 26.37639632
500 52.75279263
1000 105.5055853

How to Convert Manually

Use these steps to convert Therm values to Gigajoule without the calculator.

  1. Write down the value in Therm (therm) that you want to convert.
  2. Multiply that value by 0.1055055853.
  3. For example, 10 Therm × 0.1055055853 = 1.055055853 Gigajoule.
  4. Label the result as Gigajoule (GJ).

Relative Size Comparison

1 Therm
1 Gigajoule9.478171203Therms
1GJ

This chart shows the visual difference in size between exactly one Therm and one Gigajoule.

About Therm and Gigajoule

The therm is 100,000 BTU, about 105.5 megajoules. US natural gas utilities bill household consumption in therms. The gigajoule is one billion joules, roughly the energy in 26 liters of gasoline. District heating and industrial energy contracts bill in gigajoules. One Therm equals 0.1055055853 Gigajoule (1 therm = 0.1055055853 GJ). Therm to Gigajoule conversion comes up most often in US natural gas billing and in home heating cost estimates, typically when figures need restating for district heating bills.

Precision and Rounding: Energy factors mix exact definitions (1 kWh = 3,600,000 J; 1 cal = 4.184 J thermochemical) with measured conventions (1 BTU ≈ 1,055.056 J). Nutrition and utility bills round to whole units; engineering heat calculations should keep the full factor until the final step.

Conversion factors per NIST Special Publication 811 and the BIPM SI Brochure (9th edition) (reference).

Worked Example

15 Therm equals 1.582583779 Gigajoule.

15 therm × 0.1055055853 = 1.582583779 GJ

FAQ

How do I convert Therm to Gigajoule?

Multiply the Therm value by 0.1055055853 to get the equivalent value in Gigajoule.

What is the formula for Therm to Gigajoule?

The formula is GJ = therm × 0.1055055853.

How many Gigajoule are in 1 Therm?

1 Therm equals 0.1055055853 Gigajoule.

Can I convert Gigajoule back to Therm?

Yes. 1 Gigajoule equals 9.478171203 Therm, and the related converter can reverse the calculation.

What are common names for Therm and Gigajoule?

Therm is shown as therm and may also be searched as therms. Gigajoule is shown as GJ and may also be searched as gigajoule, gigajoules.

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