Kilowatt-hours to British Thermal Units Converter
1 kilowatt-hour ≈ 3,412.14163 British thermal units
Several BTU definitions exist. This converter uses the International Table BTU, the one used by HVAC equipment ratings.
1 kilowatt-hour equals 3,412.14 British thermal units
How to convert kilowatt-hours to British thermal units
Calories here are thermochemical (4.184 J), while BTU uses the International Table definition. A kilowatt-hour is energy (3.6 MJ), not power; a food Calorie is a kilocalorie.
BTU = kWh × 3412.141633One kilowatt-hour is 3412.141633 British thermal units, so a single multiplication converts any value.
34,121.4 BTU ≈ 10 × 3412.141633Several BTU definitions exist. This converter uses the International Table BTU, the one used by HVAC equipment ratings.
Kilowatt-hours to British thermal units conversion table
Common values in kilowatt-hours, converted to British thermal units.
| Kilowatt-hours (kWh) | British thermal units (BTU) |
|---|---|
| 1 | 3,412.1416 |
| 2 | 6,824.2833 |
| 3 | 10,236.425 |
| 4 | 13,648.567 |
| 5 | 17,060.708 |
| 10 | 34,121.416 |
| 20 | 68,242.833 |
| 25 | 85,303.541 |
| 50 | 170,607.08 |
| 100 | 341,214.16 |
| 250 | 853,035.41 |
| 500 | 1,706,070.8 |
| 1,000 | 3,412,141.6 |
About these units
kilowatt-hourkWh
One kilowatt sustained for one hour: exactly 3.6 megajoules. The billing unit for electricity.
British thermal unitBTU
The International Table BTU: 1,055.05585262 joules. The US heating and cooling unit.
Reference: NIST Special Publication 811.
Sources and precision
Table results are rounded to 8 significant digits; formula constants may be rounded to 10. Worked example answers use 6 significant digits. The converter starts at 6 significant digits and lets you change display precision. Calculations use the stored factors without intermediate rounding. Exact unit definitions do not make an input measurement more precise; conventional and measured factors follow the assumptions stated here.