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Watt-hours to Therms Converter

Convert watt-hours (Wh) 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.
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Result
3.41214163313 × 10⁻⁵ thm
joules (watt-seconds)
3,600 J
kilojoules
3.6 kJ
megajoules
0.0036 MJ
gigajoules
3.6 × 10⁻⁶ GJ
calories (thermochemical)
860.420650096 cal
kilocalories (food Calories)
0.860420650096 kcal
megacalories
0.000860420650096 Mcal
kilowatt-hours
0.001 kWh
megawatt-hours
1 × 10⁻⁶ MWh
British thermal units (IT)
3.41214163313 Btu
million Btu
3.41214163313 × 10⁻⁶ MMBtu
quads (10¹⁵ Btu)
3.41214163313 × 10⁻¹⁵ quad
electronvolts
2.24694326681 × 10²² eV
kiloelectronvolts
2.24694326681 × 10¹⁹ keV
megaelectronvolts
2.24694326681 × 10¹⁶ MeV

1 Wh = 3.41214163313 × 10⁻⁵ thm

Show the working
  1. 1 Wh = 3.41214163313e-5 thm
  2. 1 × 3.41214163313e-5 = 3.41214163313e-5 thm

How to convert watt-hours to therms

1 Wh = 3.41214163313 × 10⁻⁵ thm, so multiply by 3.41214163313 to go from watt-hours to therms (100,000 Btu). Going the other way, 1 thm = 29,307.1070172 Wh.

thm = Wh × 3.41214163313
Wh = thm × 29,307.1070172

Worked example:

1 Wh = 3.41214163313e-5 thm
5 × 3.41214163313e-5 = 0.000170607081656 thm

Watt-hours to therms table

Watt-hoursTherms
1 Wh3.41214163313 × 10⁻⁵ thm
2 Wh6.82428326626 × 10⁻⁵ thm
3 Wh0.000102364248994 thm
4 Wh0.000136485665325 thm
5 Wh0.000170607081656 thm
6 Wh0.000204728497988 thm
7 Wh0.000238849914319 thm
8 Wh0.00027297133065 thm
9 Wh0.000307092746982 thm
10 Wh0.000341214163313 thm
15 Wh0.000511821244969 thm
20 Wh0.000682428326626 thm
25 Wh0.000853035408282 thm
30 Wh0.00102364248994 thm
40 Wh0.00136485665325 thm
50 Wh0.00170607081656 thm
75 Wh0.00255910622485 thm
100 Wh0.00341214163313 thm
250 Wh0.00853035408282 thm
500 Wh0.0170607081656 thm
1000 Wh0.0341214163313 thm

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.

Formula version 0.1.0Reviewed