British Thermal Units to Kilowatt-hours Converter
1 British thermal unit ≈ 0.00029307107 kilowatt-hours
Several BTU definitions exist. This converter uses the International Table BTU, the one used by HVAC equipment ratings.
1 British thermal unit equals 0.000293071 kilowatt-hours
How to convert British thermal units to kilowatt-hours
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.
kWh = BTU × 0.0002930710702One British thermal unit is 0.0002930710702 kilowatt-hours, so a single multiplication converts any value.
0.00293071 kWh ≈ 10 × 0.0002930710702Several BTU definitions exist. This converter uses the International Table BTU, the one used by HVAC equipment ratings.
British thermal units to kilowatt-hours conversion table
Common values in British thermal units, converted to kilowatt-hours.
| British thermal units (BTU) | Kilowatt-hours (kWh) |
|---|---|
| 1 | 0.00029307107 |
| 2 | 0.00058614214 |
| 3 | 0.00087921321 |
| 4 | 0.0011722843 |
| 5 | 0.0014653554 |
| 10 | 0.0029307107 |
| 20 | 0.0058614214 |
| 25 | 0.0073267768 |
| 50 | 0.014653554 |
| 100 | 0.029307107 |
| 250 | 0.073267768 |
| 500 | 0.14653554 |
| 1,000 | 0.29307107 |
About these units
British thermal unitBTU
The International Table BTU: 1,055.05585262 joules. The US heating and cooling unit.
Reference: NIST Special Publication 811.
kilowatt-hourkWh
One kilowatt sustained for one hour: exactly 3.6 megajoules. The billing unit for electricity.
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.