Marks Calc

BTU to therms

Convert btu to therm — instant, free, with the formula shown.

1 BTU=1.0000e-5 thm

How to convert btu to therm

To convert btu to therm, multiply by 1.0000e-5:

thm = BTU × 1.0000e-5

For example, 10 BTU × 1.0000e-5 = 1.0000e-4 thm.

BTU to thm conversion table

BTU (BTU)therms (thm)
1 BTU1.0000e-5 thm
2 BTU2.0000e-5 thm
5 BTU5.0000e-5 thm
10 BTU1.0000e-4 thm
25 BTU0.00025 thm
50 BTU0.0005 thm
100 BTU0.001 thm
250 BTU0.0025 thm
500 BTU0.005 thm
1000 BTU0.01 thm
Reverse: Therm to BTU

Other btu conversions

Convert to therm from another unit

BTU to thm — frequently asked

How many therms are in 1 btu?

1 btu = 1.0000e-5 therms (BTU × 1.0000e-5 = thm).

What is the formula to convert btu to therm?

Multiply your btu value by 1.0000e-5 to get therm.

How do I convert 10 BTU to therms?

10 BTU = 1.0000e-4 thm. For 100 BTU the answer is 0.001 thm. Use the calculator on this page for any other value.

When to convert btu to therm

1Electricity bills (kWh)
2Nutrition labels (kcal / food cal)
3HVAC and heating (BTU, therms)
4Physics and chemistry (J, eV)

Energy conversion — common questions

Is a food calorie the same as a calorie?

No — a food 'Calorie' (capital C) actually means 1 kilocalorie = 1,000 small calories = 4,184 J. Nutrition labels typically write 'cal' meaning kcal.

How many joules in 1 kWh?

1 kWh = 3,600,000 J (3.6 MJ). Because 1 kW × 1 hour = 1,000 W × 3,600 s = 3,600,000 J.

What is a BTU?

British Thermal Unit — the energy required to raise 1 pound of water by 1 °F. 1 BTU ≈ 1,055 J.

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