Skip to content
RK Calculator
Menu

Therms to Joules Converter

Convert therms (100,000 Btu) (thm) to joules (watt-seconds) (J), 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
105,505,585.262 J
kilojoules
105,505.585262 kJ
megajoules
105.505585262 MJ
gigajoules
0.105505585262 GJ
calories (thermochemical)
25,216,440.0722 cal
kilocalories (food Calories)
25,216.4400722 kcal
megacalories
25.2164400722 Mcal
watt-hours
29,307.1070172 Wh
kilowatt-hours
29.3071070172 kWh
megawatt-hours
0.0293071070172 MWh
British thermal units (IT)
100,000 Btu
million Btu
0.1 MMBtu
quads (10¹⁵ Btu)
1 × 10⁻¹⁰ quad
electronvolts
6.58514067819 × 10²⁶ eV
kiloelectronvolts
6.58514067819 × 10²³ keV
megaelectronvolts
6.58514067819 × 10²⁰ MeV

1 thm = 105,505,585.262 J

Show the working
  1. 1 thm = 105505585.262 J
  2. 1 × 105505585.262 = 105505585.262 J

How to convert therms to joules

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

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

Worked example:

1 thm = 105505585.262 J
5 × 105505585.262 = 527527926.31 J

Therms to joules table

ThermsJoules
1 thm105,505,585.262 J
2 thm211,011,170.524 J
3 thm316,516,755.786 J
4 thm422,022,341.048 J
5 thm527,527,926.31 J
6 thm633,033,511.572 J
7 thm738,539,096.834 J
8 thm844,044,682.096 J
9 thm949,550,267.358 J
10 thm1,055,055,852.62 J
15 thm1,582,583,778.93 J
20 thm2,110,111,705.24 J
25 thm2,637,639,631.55 J
30 thm3,165,167,557.86 J
40 thm4,220,223,410.48 J
50 thm5,275,279,263.1 J
75 thm7,912,918,894.65 J
100 thm10,550,558,526.2 J
250 thm26,376,396,315.5 J
500 thm52,752,792,631 J
1000 thm105,505,585,262 J

About the units

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.
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).

Formula version 0.1.0Reviewed