How many Watt-hour are in 1 British Thermal Unit?

One british thermal unit equals 0.293072 watt-hour.

Can I convert Watt-hour back to British Thermal Unit?

Yes. Enter a value in either field to convert from British Thermal Unit (BTU) to Watt-hour (Wh) or the reverse — results update instantly.

British Thermal Unit to Watt-hour Converter

BTU → Wh

Convert between joules, calories, BTU, kWh, and more energy units. Perfect for physics, nutrition, and electricity calculations.

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How to Convert British Thermal Unit to Watt-hour

Enter a value above, select your units, and get instant results. Works both ways — British Thermal Unit to Watt-hour or Watt-hour to British Thermal Unit.

Formula: Watt-hour = British Thermal Unit × 0.293072

Quick steps

Enter the value you want to convert in the "British Thermal Unit" field.
Select "British Thermal Unit" as your "From" unit.
Select "Watt-hour" as your "To" unit.
The converted result appears instantly in the "Watt-hour" field.
To reverse the conversion, enter a value in the "Watt-hour" field instead.

Common British Thermal Unit to Watt-hour Conversions

British Thermal Unit	Watt-hour
1	0.293072
5	1.465361
10	2.930722
25	7.326806
50	14.653611
100	29.307222

Frequently Asked Questions

Multiply your british thermal unit value by 0.293072. For example, 10 BTU = 2.930722 Wh.

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Convert British Thermal Unit to Watt-hour