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Therms to BTU Converter

Quick answer: 1 thm = 100,000 BTU. To convert therms to BTU, multiply by 100,000.

thm
BTU

BTU = Therms × 100,000

Swap: BTU to Therms

Therms to BTU conversion table

ThermsBTU
1 thm100,000 BTU
2 thm200,000 BTU
5 thm500,000 BTU
10 thm1,000,000 BTU
25 thm2,500,000 BTU
50 thm5,000,000 BTU
100 thm10,000,000 BTU

How to convert therms to BTU

BTU = Therms × 100,000. For example, 2 thm = 200,000 BTU. Type a value in either box above: the other one updates instantly, both ways.

What is a therm?

A therm is 100,000 BTU, about 29.3 kWh; US natural gas bills use it.

What is a BTU?

A BTU (British thermal unit) is about 1,055 joules, the energy to heat one pound of water by 1 °F.

How do I convert therms to BTU?

Use the formula BTU = Therms × 100,000. Type a value in the therms box and the result appears instantly.

How many BTU are in 1 therm?

1 thm = 100,000 BTU.

Is this converter free and private?

Yes. It is free, needs no sign-up, and the calculation runs in your browser: nothing is sent to a server.

Is a food Calorie the same as a calorie?

No. The Calorie on food labels is a kilocalorie (kcal), 1000 small calories or 4.184 kJ. This page uses the thermochemical calorie, 4.184 J.