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watt-hour to British thermal unit

Live watt-hour (Wh) to British thermal unit (BTU) converter. Plus a 10-value reference table and FAQs.

From Wh

watt-hour

To BTU

British thermal unit

1 Wh = 3.4121BTU

Conversion table

Ten sample values from watt-hour to British thermal unit. Use the converter above for arbitrary values.

watt-hour (Wh)	→	British thermal unit (BTU)
0.001 Wh	→	0.003412 BTU
0.01 Wh	→	0.034121 BTU
0.1 Wh	→	0.341214 BTU
0.5 Wh	→	1.706071 BTU
1 Wh	→	3.412142 BTU
2 Wh	→	6.824283 BTU
5 Wh	→	17.060708 BTU
10 Wh	→	34.121416 BTU
100 Wh	→	341.214163 BTU
1,000 Wh	→	3,412.141633 BTU

About the watt-hour

1 W sustained for 1 hour (3600 J).

About the British thermal unit

≈ 1055 J. HVAC in the US.

How watt-hour to British thermal unit conversion works

Both units belong to Energy. Unitbox first expresses the input in the category reference unit (J), then expresses that same quantity in British thermal unit.

The right unit depends on the convention used by your industry, country, instrument, or source document.

Reference value1 Wh = 3.41214163 BTU

CalculationBrowser-side, using Unitbox's shared unit data

Review noteFor safety-critical work, verify against the governing standard or instrument manual.

Unit definitions and conversion factors are maintained in the Unitbox methodology. Last reviewed with the current conversion dataset.