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Convert Wh to BTU

Watt hours to British thermal units. Enter a value to convert, or use the Wh to BTU chart further down the page.

1 Wh = 3.412141633 BTU

1 watt hour equals 3.412141633 British thermal units. Going the other way, 1 British thermal unit = 0.2930710702 watt hours.

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Check this before you rely on it. This converter is provided free and without warranty, and its results are not professional advice.

How to convert Wh to BTU

To convert watt hours to British thermal units, multiply the watt hour value by 3.412141633. You can also divide by 0.2930710702 to get the same answer.

BTU = Wh × 3.412141633

Worked example

Convert 15 Wh to British thermal units:

15 Wh = 51.1821245 BTU

Wh to BTU conversion chart

Use this Wh to BTU table for quick reference without typing anything.

Wh to BTU conversion table
watt hours (Wh)British thermal units (BTU)
0.01 Wh0.03412141633 BTU
0.1 Wh0.3412141633 BTU
1 Wh3.412141633 BTU
2 Wh6.824283266 BTU
3 Wh10.2364249 BTU
5 Wh17.06070817 BTU
10 Wh34.12141633 BTU
20 Wh68.24283266 BTU
50 Wh170.6070817 BTU
100 Wh341.2141633 BTU
1,000 Wh3,412.141633 BTU

What is a watt hour?

A watt hour is exactly 3,600 joules — the energy used by a one-watt device in one hour. Battery capacity is rated in watt hours.

What is a British thermal unit?

The BTU is the energy needed to raise one pound of water by one degree Fahrenheit — about 1,055 joules. It rates heating and air-conditioning equipment in the US.

Frequently asked questions

How many BTU are in a watt hour?

1 Wh equals 3.412141633 BTU. Going the other way, 1 BTU is 0.2930710702 Wh.

How do you convert Wh to BTU?

To convert watt hours to British thermal units, multiply the watt hour value by 3.412141633. You can also divide by 0.2930710702 to get the same answer.

What is 10 Wh in BTU?

10 Wh equals 34.12141633 BTU. The conversion chart on this page lists the other values people look up most often.

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