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Joules to Therms Converter

Convert joules (watt-seconds) (J) to therms (100,000 Btu) (thm), with the formula, a conversion table and exact factors.

Change the values and press Calculate to work out your own figures.

Enter an amount of energy, choose its unit and the unit you want. The answer is exact until it is shown, and the same value appears in every other unit.

A number, fraction (3/8), mixed number (1 1/2), scientific notation (2.5e6) or a simple sum such as 2*3.
The unit you want the answer in. Swap exchanges the two units.
Result
9.47817120313 × 10⁻⁹ thm
kilojoules
0.001 kJ
megajoules
1 × 10⁻⁶ MJ
gigajoules
1 × 10⁻⁹ GJ
calories (thermochemical)
0.239005736138 cal
kilocalories (food Calories)
0.000239005736138 kcal
megacalories
2.39005736138 × 10⁻⁷ Mcal
watt-hours
0.000277777777778 Wh
kilowatt-hours
2.77777777778 × 10⁻⁷ kWh
megawatt-hours
2.77777777778 × 10⁻¹⁰ MWh
British thermal units (IT)
0.000947817120313 Btu
million Btu
9.47817120313 × 10⁻¹⁰ MMBtu
quads (10¹⁵ Btu)
9.47817120313 × 10⁻¹⁹ quad
electronvolts
6.24150907446 × 10¹⁸ eV
kiloelectronvolts
6.24150907446 × 10¹⁵ keV
megaelectronvolts
6,241,509,074,460 MeV

1 J = 9.47817120313 × 10⁻⁹ thm

Show the working
  1. 1 J = 9.47817120313e-9 thm
  2. 1 × 9.47817120313e-9 = 9.47817120313e-9 thm

How to convert joules to therms

1 J = 9.47817120313 × 10⁻⁹ thm, so multiply by 9.47817120313 to go from joules (watt-seconds) to therms (100,000 Btu). Going the other way, 1 thm = 105,505,585.262 J.

thm = J × 9.47817120313
J = thm × 105,505,585.262

Worked example:

1 J = 9.47817120313e-9 thm
5 × 9.47817120313e-9 = 4.73908560157e-8 thm

Joules to therms table

JoulesTherms
1 J9.47817120313 × 10⁻⁹ thm
2 J1.89563424063 × 10⁻⁸ thm
3 J2.84345136094 × 10⁻⁸ thm
4 J3.79126848125 × 10⁻⁸ thm
5 J4.73908560157 × 10⁻⁸ thm
6 J5.68690272188 × 10⁻⁸ thm
7 J6.63471984219 × 10⁻⁸ thm
8 J7.58253696251 × 10⁻⁸ thm
9 J8.53035408282 × 10⁻⁸ thm
10 J9.47817120313 × 10⁻⁸ thm
15 J1.42172568047 × 10⁻⁷ thm
20 J1.89563424063 × 10⁻⁷ thm
25 J2.36954280078 × 10⁻⁷ thm
30 J2.84345136094 × 10⁻⁷ thm
40 J3.79126848125 × 10⁻⁷ thm
50 J4.73908560157 × 10⁻⁷ thm
75 J7.10862840235 × 10⁻⁷ thm
100 J9.47817120313 × 10⁻⁷ thm
250 J2.36954280078 × 10⁻⁶ thm
500 J4.73908560157 × 10⁻⁶ thm
1000 J9.47817120313 × 10⁻⁶ thm

About the units

Joules (J)
Joules (watt-seconds), a metric unit. Definition: BIPM SI Brochure, 9th edition (SI units, prefixes and units accepted for use with the SI).
Therms (thm)
Therms (100,000 Btu), a US customary unit. The EC/IT therm; the US therm is 105,480,400 J, 0.02% smaller. Definition: NIST SP 811 Appendix B.8, factors for units listed alphabetically.

Formula version 0.1.0Reviewed