How do I convert Watt-hour (Wh) to BTU (IT)?

1 wh equals 3.412142 btu using SI-based conversion and precise factors.

What is the formula to convert Watt-hour (Wh) to BTU (IT)?

This is a linear unit conversion using a constant factor between units.

Yes, it uses exact definitions or standardized constants (e.g., 1 in = 25.4 mm).

Use the shareable URL pattern: /convert/wh-to-btu/1

Category: Energy

Value From To Precision

3.412142 btu

1 wh = 3.412142 btu

High-precision rounding: 6 decimals

We convert by pivoting through the SI base unit for Energy and applying exact factors where applicable.

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Energy is capacity to do work; joules, calories, Wh and BTU are common.

Watt-hour (Wh)

Energy used by 1 W for 1 hour.

History: Common in batteries and electricity bills.

British thermal unit (BTU)

≈ 1,055.06 J (IT).

History: Steam age heat unit; HVAC standard.