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Power and Energy

WhtoBTU

Convert watt-hours (Wh) to International Table BTUs (BTU).

Factor1 Wh = 3.412142 BTU

Converter

Wh

Accepts numbers or expressions, e.g. 150 + 14.7

Result
3412.14BTU

Rendered to 6 significant figures.

Formula

Formula
BTU = Wh × 3.412142

Multiply any value in watt-hours by 3.412142 to obtain the value in International Table BTUs.

Worked example

Convert 1000 Wh to BTU.

  1. 01Start with 1000 Wh.
  2. 02Multiply by the conversion factor: 1000 × 3.412142 = 3412.14 BTU.
Result1000 Wh = 3412.14 BTU

Conversion table

WhBTU
13.4121
26.8243
517.061
1034.121
2068.243
50170.61
100341.21
200682.43
5001706.1
10003412.1

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from Wh to BTU?
1 Wh equals 3.412142 BTU. To convert, multiply the value in watt-hours by 3.412142.
How do I convert 1 Wh to BTU?
1 Wh = 3.41214 BTU. For any value, multiply by 3.412142.
How do I convert BTU back to Wh?
Divide by the same factor — or equivalently, multiply by 0.2930711. So 1 BTU = 0.293071 Wh.
When would I need to convert watt-hour to International Table BTU?
Energy conversions are needed when reconciling fuel/electrical billing, calculating thermal duties, and aligning calorimetry or HHV/LHV figures across data sources.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).

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