Watt-seconds to Million BTU Conversion

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

Results in Million BTU:
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1 Ws = 9.4782E-10 MMBTU
Hint: use a scientific notation calculator to convert E notation to decimal

How to Convert Watt-seconds to Million BTU

To convert a watt-second measurement to a million BTU measurement, multiply the energy by the conversion ratio.

Since one watt-second is equal to 9.4782E-10 million BTU, you can use this simple formula to convert:

million BTU = watt-seconds × 9.4782E-10

The energy in million BTU is equal to the watt-seconds multiplied by 9.4782E-10.

For example, here's how to convert 5,000,000,000 watt-seconds to million BTU using the formula above.
5,000,000,000 Ws = (5,000,000,000 × 9.4782E-10) = 4.739086 MMBTU

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


The watt-second is a measure of electrical energy equal to one watt of power over a one second period. One watt-second is equal to 1/3,600 of a watt-hour or one joule.

Watt-seconds are usually abbreviated as Ws, although the formally adopted expression is W·s. The abbreviation W s is also sometimes used. For example, 1 watt-second can be written as 1 Ws, 1 W·s, or 1 W s.

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]

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.

Watt-second to Million BTU Conversion Table

Watt-second measurements converted to million BTU
Watt-seconds Million BTU
1 Ws 0.00000000094782 MMBTU
2 Ws 0.0000000018956 MMBTU
3 Ws 0.0000000028435 MMBTU
4 Ws 0.0000000037913 MMBTU
5 Ws 0.0000000047391 MMBTU
6 Ws 0.0000000056869 MMBTU
7 Ws 0.0000000066347 MMBTU
8 Ws 0.0000000075825 MMBTU
9 Ws 0.0000000085304 MMBTU
10 Ws 0.0000000094782 MMBTU
100 Ws 0.000000094782 MMBTU
1,000 Ws 0.00000094782 MMBTU
10,000 Ws 0.0000094782 MMBTU
100,000 Ws 0.000094782 MMBTU
1,000,000 Ws 0.000948 MMBTU
10,000,000 Ws 0.009478 MMBTU
100,000,000 Ws 0.094782 MMBTU
1,000,000,000 Ws 0.947817 MMBTU
10,000,000,000 Ws 9.4782 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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