Watt-Hours to Million BTU Converter

Enter the energy in watt-hours below to get the value converted to million BTU.


Result in Million BTU:

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1 Wh = 3.4121E-6 MMBTU
Hint: use a scientific notation calculator to convert E notation to decimal

Do you want to convert million BTU to watt-hours?

How to Convert Watt-Hours to Million BTU

To convert a measurement in watt-hours to a measurement in million BTU, multiply the energy by the following conversion ratio: 3.4121E-6 million BTU/watt-hour.

Since one watt-hour is equal to 3.4121E-6 million BTU, you can use this simple formula to convert:

million BTU = watt-hours × 3.4121E-6

The energy in million BTU is equal to the energy in watt-hours multiplied by 3.4121E-6.

For example, here's how to convert 500,000 watt-hours to million BTU using the formula above.
million BTU = (500,000 Wh × 3.4121E-6) = 1.706071 MMBTU

Watt-hours and million BTU are both units used to measure energy. Keep reading to learn more about each unit of measure.

What Is a Watt-Hour?

The watt-hour is a measure of electrical energy equal to one watt of power over a one hour period.

Watt-hours are usually abbreviated as Wh, although the formally adopted expression is W·h. The abbreviation W h is also sometimes used. For example, 1 watt-hour can be written as 1 Wh, 1 W·h, or 1 W h.

In formal expressions, the centered dot (·) or space is used to separate units used to indicate multiplication in an expression and to avoid conflicting prefixes being misinterpreted as a unit symbol.[1]

Learn more about watt-hours.

What Is a Million BTU?

One million BTU is a measure of heat energy equal to 1,000,000 BTU, which are equal to the amount of heat energy required to increase the temperature of one pound of water one degree Fahrenheit.

The million BTU is a US customary unit of energy. Million BTU can be abbreviated as MMBTU; for example, 1 million BTU can be written as 1 MMBTU.

Learn more about million BTU.

Watt-Hour to Million BTU Conversion Table

Table showing various watt-hour measurements converted to million BTU.
Watt-hours Million BTU
1 Wh 0.0000034121 MMBTU
2 Wh 0.0000068243 MMBTU
3 Wh 0.000010236 MMBTU
4 Wh 0.000013649 MMBTU
5 Wh 0.000017061 MMBTU
6 Wh 0.000020473 MMBTU
7 Wh 0.000023885 MMBTU
8 Wh 0.000027297 MMBTU
9 Wh 0.000030709 MMBTU
10 Wh 0.000034121 MMBTU
100 Wh 0.000341 MMBTU
1,000 Wh 0.003412 MMBTU
10,000 Wh 0.034121 MMBTU
100,000 Wh 0.341214 MMBTU
1,000,000 Wh 3.4121 MMBTU


  1. Bureau International des Poids et Mesures, The International System of Units (SI), 9th edition, 2019, https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf

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