At One Place

Watt-hours to British thermal units

1 watt-hour in British thermal units
1 Wh = 3.412142 BTU
BTU = Wh × 3.412141633

To convert watt-hours to British thermal units, multiply by 3.412141633. The table below gives the values people look up most often, and the converter works for any number.

Watt-hours to British thermal units table

Common watt-hour values converted to British thermal units.
Watt-hours British thermal units
1 Wh 3.412142
2 Wh 6.824283
3 Wh 10.23642
4 Wh 13.64857
5 Wh 17.06071
10 Wh 34.12142
15 Wh 51.18212
20 Wh 68.24283
25 Wh 85.30354
30 Wh 102.3642
40 Wh 136.4857
50 Wh 170.6071
75 Wh 255.9106
100 Wh 341.2142
250 Wh 853.0354
500 Wh 1,706.0708
1,000 Wh 3,412.1416

How the conversion works

The relationship is BTU = Wh × 3.412141633. Both units measure energy, so the conversion is a fixed factor that never changes.

Common questions

How many British thermal units are in one watt-hour?
One watt-hour equals 3.412142 British thermal units. BTU = Wh × 3.412141633.
How do you convert watt-hours to British thermal units?
Use BTU = Wh × 3.412141633. So 10 Wh is 34.12142 BTU.
How many watt-hours are in one British thermal unit?
One British thermal unit equals 0.29307 watt-hours, which is the reverse of the conversion above.

Related pages

Sources

  1. Guide for the Use of the International System of Units (SP 811) — NIST (Public domain (US Government))
  2. The International System of Units (SI Brochure) — Bureau International des Poids et Mesures
  3. Calculated on this page — At One Place

How these figures are compiled and checked