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British thermal unit to watt-hour

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

From BTU

British thermal unit

To Wh

watt-hour

1 BTU = 0.2931Wh

換算表

British thermal unitからwatt-hourまでの 10 個のサンプル値。任意の値には上の換算器をお使いください。

≈ 1055 J. HVAC in the US.

1 W sustained for 1 hour (3600 J).

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

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

Reference value1 BTU = 0.29307107 Wh

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.

How do I convert British thermal unit to watt-hour?

Multiply the British thermal unit value by 0.293071 to get it in watt-hour. For example, 10 BTU = 2.9307 Wh.

What is 1 BTU in Wh?

1 BTU = 0.293071 Wh.

What is 100 BTU in Wh?

100 BTU = 29.3071 Wh.

What is the formula?

Linear: multiply by 0.293071 (the unit factor ratio).

Use the reverse converter: watt-hour → British thermal unit

Energy has 10 units.

Free-form calculator that handles any pair in any category.