Convert watt-hour to British thermal unit
1 Wh = 3.412141633 BTU
1 Wh = 3.4121 BTU
1 Wh in every energy unit
| electron volt | 2.2469e+22 eV |
| hartree | 8.2574e+20 Eh |
| kiloelectron volt | 2.2469e+19 keV |
| megaelectron volt | 2.2469e+16 MeV |
| gigaelectron volt | 22,469,000,000,000 GeV |
| nanojoule | 3,600,000,000,000 nJ |
| erg | 36,000,000,000 erg |
| teraelectron volt | 22,469,000,000 TeV |
| microjoule | 3,600,000,000 µJ |
| millijoule | 3,600,000 mJ |
| inch-pound | 31,863 in·lb |
| joule | 3,600 J |
| foot-pound | 2,655.2 ft⋅lb |
| calorie | 860.42 cal |
| calorie (International Table) | 859.85 cal IT |
| kilojoule | 3.6 kJ |
| BTU (thermochemical) | 3.4144 BTU th |
| British thermal unit | 3.4121 BTU |
| watt-hour | 1 Wh |
| kilocalorie | 0.86042 kcal |
| megajoule | 0.0036 MJ |
| horsepower-hour | 0.001341 hp·h |
| kilowatt-hour | 0.001 kWh |
| therm | 0.000034121 therm |
| gigajoule | 0.0000036 GJ |
| million BTU | 0.0000034121 MMBTU |
| megawatt-hour | 0.000001 MWh |
| ton of TNT | 8.6042e-07 t TNT |
| tonne of oil equivalent | 8.5985e-08 toe |
| terajoule | 3.6000e-09 TJ |
| gigawatt-hour | 1.0000e-09 GWh |
| kiloton of TNT | 8.6042e-10 kt TNT |
| petajoule | 3.6000e-12 PJ |
| terawatt-hour | 1.0000e-12 TWh |
| megaton of TNT | 8.6042e-13 Mt TNT |
| quad | 3.4121e-15 quad |
How the conversion works
Multiply by 3.412141633 to go from watt-hour to British thermal unit, or divide by it to go back. Every conversion on this site routes through the SI value (J) rather than a table of pairwise factors, so a round-trip returns exactly what you started with.
Going the other way? British thermal unit to watt-hour — 1 BTU = 0.2930710702 Wh.
watt-hour to British thermal unit — common values
| 1 Wh | 3.4121416 BTU |
| 2 Wh | 6.8242833 BTU |
| 3 Wh | 10.236425 BTU |
| 5 Wh | 17.060708 BTU |
| 10 Wh | 34.121416 BTU |
| 15 Wh | 51.182124 BTU |
| 20 Wh | 68.242833 BTU |
| 25 Wh | 85.303541 BTU |
| 50 Wh | 170.60708 BTU |
| 75 Wh | 255.91062 BTU |
| 100 Wh | 341.21416 BTU |
| 250 Wh | 853.03541 BTU |
| 500 Wh | 1,706.0708 BTU |
| 1000 Wh | 3,412.1416 BTU |