Joule to Therm Converter

One Joule equals 9.478171e-9 Therm (1 J = 9.478171e-9 therm). Multiply a Joule value by 9.478171e-9 to get the equivalent in Therm. Use the calculator above for instant results, or follow the formula, worked examples, and reference table below.

Formula

therm = J × 9.478171e-9

Multiply the Joule value by 9.478171e-9 to get the equivalent value in Therm.

Example Conversions

1 Joule (J)

9.478171e-9 Therm (therm)

5 Joule (J)

4.739086e-8 Therm (therm)

10 Joule (J)

9.478171e-8 Therm (therm)

25 Joule (J)

2.369543e-7 Therm (therm)

100 Joule (J)

9.478171e-7 Therm (therm)

Conversion Table

Common conversion values from Joule to Therm
Joule (J) Therm (therm)
0.1 9.478171e-10
0.5 4.739086e-9
1 9.478171e-9
2 1.895634e-8
5 4.739086e-8
10 9.478171e-8
25 2.369543e-7
50 4.739086e-7
100 9.478171e-7
250 0.000002369542801
500 0.000004739085602
1000 0.000009478171203

How to Convert Manually

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

  1. Write down the value in Joule (J) that you want to convert.
  2. Multiply that value by 9.478171e-9.
  3. For example, 10 Joule × 9.478171e-9 = 9.478171e-8 Therm.
  4. Label the result as Therm (therm).

Relative Size Comparison

1 Joule
1 Therm105505585.3Joules
1therm

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

About Joule and Therm

The joule is the SI derived unit of energy — the work done by a force of one newton over one meter. Physics, chemistry, and food labeling outside the US build on it. The therm is 100,000 BTU, about 105.5 megajoules. US natural gas utilities bill household consumption in therms. One Joule equals 9.478171e-9 Therm (1 J = 9.478171e-9 therm). Joule to Therm conversion comes up most often in physics and engineering calculations and in food energy labeling outside the US, typically when figures need restating for US natural gas billing.

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 Joule equals 1.421726e-7 Therm.

15 J × 9.478171e-9 = 1.421726e-7 therm

FAQ

How do I convert Joule to Therm?

Multiply the Joule value by 9.478171e-9 to get the equivalent value in Therm.

What is the formula for Joule to Therm?

The formula is therm = J × 9.478171e-9.

How many Therm are in 1 Joule?

1 Joule equals 9.478171e-9 Therm.

Can I convert Therm back to Joule?

Yes. 1 Therm equals 105505585.3 Joule, and the related converter can reverse the calculation.

What are common names for Joule and Therm?

Joule is shown as J and may also be searched as joule, joules. Therm is shown as therm and may also be searched as therms.

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