Skip to content
RK Calculator
Menu

British Thermal Units to Therms Converter

Convert British thermal units (IT) (Btu) 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
1 × 10⁻⁵ thm
joules (watt-seconds)
1,055.05585262 J
kilojoules
1.05505585262 kJ
megajoules
0.00105505585262 MJ
gigajoules
1.05505585262 × 10⁻⁶ GJ
calories (thermochemical)
252.164400722 cal
kilocalories (food Calories)
0.252164400722 kcal
megacalories
0.000252164400722 Mcal
watt-hours
0.293071070172 Wh
kilowatt-hours
0.000293071070172 kWh
megawatt-hours
2.93071070172 × 10⁻⁷ MWh
million Btu
1 × 10⁻⁶ MMBtu
quads (10¹⁵ Btu)
1 × 10⁻¹⁵ quad
electronvolts
6.58514067819 × 10²¹ eV
kiloelectronvolts
6.58514067819 × 10¹⁸ keV
megaelectronvolts
6.58514067819 × 10¹⁵ MeV

1 Btu = 1 × 10⁻⁵ thm

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

How to convert british thermal units to therms

1 Btu = 1 × 10⁻⁵ thm, so multiply by 1 to go from British thermal units (IT) to therms (100,000 Btu). Going the other way, 1 thm = 100,000 Btu.

thm = Btu × 1
Btu = thm × 100,000

Worked example:

1 Btu = 1e-5 thm
5 × 1e-5 = 5e-5 thm

British Thermal Units to therms table

British Thermal UnitsTherms
1 Btu1 × 10⁻⁵ thm
2 Btu2 × 10⁻⁵ thm
3 Btu3 × 10⁻⁵ thm
4 Btu4 × 10⁻⁵ thm
5 Btu5 × 10⁻⁵ thm
6 Btu6 × 10⁻⁵ thm
7 Btu7 × 10⁻⁵ thm
8 Btu8 × 10⁻⁵ thm
9 Btu9 × 10⁻⁵ thm
10 Btu0.0001 thm
15 Btu0.00015 thm
20 Btu0.0002 thm
25 Btu0.00025 thm
30 Btu0.0003 thm
40 Btu0.0004 thm
50 Btu0.0005 thm
75 Btu0.00075 thm
100 Btu0.001 thm
250 Btu0.0025 thm
500 Btu0.005 thm
1000 Btu0.01 thm

About the units

British Thermal Units (Btu)
British thermal units (IT), a US customary unit. Definition: NIST SP 811 Appendix B.8, factors for units listed alphabetically.
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