Convert Kilowatt-hours to British thermal units
1 kilowatt-hour is 3,412.141633 BTU. One kilowatt-hour is exactly 3412.14163313 British thermal units.
One kilowatt-hour is 3412.1416 British thermal units. To convert kilowatt-hours to British thermal units, multiply by 3412.1416; to go the other way, divide by 3412.1416 or multiply by 2.9307 × 10^-4. The factor is exact rather than rounded: it follows from NIST Special Publication 811. A thousand watt-hours, and the unit every electricity bill is added up in.
Factor checked against the defining standard · How we check
- Kilowatt-hours × 3412.1416
value * 3412.141633133,412.142 BTU
1 kilowatt-hour in every energy unit
| Unit | Value | Exact factor |
|---|---|---|
| joules | 3,600,000 J | × 3,600,000 |
| kilojoules | 3,600 kJ | × 3,600 |
| calories | 860,420.6501 cal | × 860,420.650096 |
| kilocalories | 860.4206501 kcal | × 860.420650096 |
| watt-hours | 1,000 Wh | × 1,000 |
| kilowatt-hours (as entered) | 1 kWh | — |
| British thermal units | 3,412.141633 BTU | × 3,412.14163313 |
| foot-pounds | 2,655,223.737 ft·lbf | × 2,655,223.7374 |
Factors are entered by hand from NIST Special Publication 811 rather than derived from a units library, so the ones that terminate are exact rather than rounded.
How do you convert kilowatt-hours to British thermal units?
- 1.Take the measurement in kilowatt-hours.
- 2.Multiply by 3412.1416 — that is how many British thermal units fit in one kilowatt-hour.
- 3.To go back the other way, divide by 3412.1416, or multiply by 2.9307 × 10^-4.
Worked example: 25 kilowatt-hours to British thermal units
- Formula
- kWh × 3412.1416 = BTU
- Arithmetic
- 25 × 3412.1416 = 85,303.540828 BTU
- Answer
- 25 kWh = 85,303.540828 BTU
The factor is rounded for display; the figure above is computed from the full value.
Kilowatt-hours to British thermal units conversion table
| Kilowatt-hours | British thermal units |
|---|---|
| 1 kWh | 3,412.141633 BTU |
| 2 kWh | 6,824.283266 BTU |
| 3 kWh | 10,236.424899 BTU |
| 4 kWh | 13,648.566533 BTU |
| 5 kWh | 17,060.708166 BTU |
| 6 kWh | 20,472.849799 BTU |
| 7 kWh | 23,884.991432 BTU |
| 8 kWh | 27,297.133065 BTU |
| 9 kWh | 30,709.274698 BTU |
| 10 kWh | 34,121.416331 BTU |
| 12 kWh | 40,945.699598 BTU |
| 15 kWh | 51,182.124497 BTU |
| 20 kWh | 68,242.832663 BTU |
| 25 kWh | 85,303.540828 BTU |
| 50 kWh | 170,607.081657 BTU |
| 100 kWh | 341,214.163313 BTU |
| 200 kWh | 682,428.326626 BTU |
| 300 kWh | 1,023,642.489939 BTU |
| 500 kWh | 1,706,070.816565 BTU |
| 1000 kWh | 3,412,141.63313 BTU |
| 2000 kWh | 6,824,283.26626 BTU |
| 5000 kWh | 17,060,708.16565 BTU |
| 10000 kWh | 34,121,416.3313 BTU |
What is a kilowatt-hour?
A thousand watt-hours, and the unit every electricity bill is added up in. Exactly 3.6 megajoules, and the reason a 100 W bulb left on for ten hours costs one unit.
What is a British thermal unit?
The international-table BTU, fixed at exactly 1055.05585262 joules. Roughly the heat needed to raise a pound of water by one degree Fahrenheit, which is where it came from.
How many British thermal units are in a kilowatt-hour?
One kilowatt-hour is 3412.1416 British thermal units. Going the other way, one British thermal unit is 2.9307 × 10^-4 kilowatt-hours. Both figures come from the same defined relation rather than from a measurement, which is why they are the same today as they were in 1959.
Every energy unit here
| Unit | Symbol | One of these is |
|---|---|---|
| Joules | J | the base unit |
| Kilojoules | kJ | 1000 joule |
| Calories | cal | 4.184 joule |
| Kilocalories | kcal | 4184 joule |
| Watt-hours | Wh | 3600 joule |
| Kilowatt-hours | kWh | 3600000 joule |
| British thermal units | BTU | 1055.0559 joule |
| Foot-pounds | ft·lbf | 1.3558179 joule |
Source: NIST Special Publication 811 — the thermochemical calorie is exactly 4.184 J
Questions people actually ask
- How many British thermal units are in a kilowatt-hour?
- 3412.1416. The international-table BTU, fixed at exactly 1055.05585262 joules. Roughly the heat needed to raise a pound of water by one degree Fahrenheit, which is where it came from.
- How do I convert British thermal units back to kilowatt-hours?
- Divide by 3412.1416, or multiply by 2.9307 × 10^-4 — they are the same operation.
Other energy conversions
British thermal units to kilowatt-hours — the same conversion the other way.