Convert Foot-pounds to Kilowatt-hours
1 foot-pound is 0 kWh. One foot-pound is exactly 3.76616096759e-7 kilowatt-hours.
One foot-pound is 3.7662 × 10^-7 kilowatt-hours. To convert foot-pounds to kilowatt-hours, multiply by 3.7662 × 10^-7; to go the other way, divide by 3.7662 × 10^-7 or multiply by 2.6552 × 10^+6. The factor is exact rather than rounded: it follows from NIST Special Publication 811. A pound-force acting through one foot.
Factor checked against the defining standard · How we check
- Foot-pounds × 3.7662 × 10^-7
value * 3.76616096759e-70 kWh
1 foot-pound in every energy unit
| Unit | Value | Exact factor |
|---|---|---|
| joules | 1.355817948 J | × 1.35581794833 |
| kilojoules | 0.001355817948 kJ | × 0.00135581794833 |
| calories | 0.3240482668 cal | × 0.32404826681 |
| kilocalories | 0.0003240482668 kcal | × 0.00032404826681 |
| watt-hours | 0.0003766160968 Wh | × 0.000376616096759 |
| kilowatt-hours | 0.0000003766160968 kWh | × 0.000000376616096759 |
| British thermal units | 0.001285067463 BTU | × 0.00128506746346 |
| foot-pounds (as entered) | 1 ft·lbf | — |
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 foot-pounds to kilowatt-hours?
- 1.Take the measurement in foot-pounds.
- 2.Multiply by 3.7662 × 10^-7 — that is how many kilowatt-hours fit in one foot-pound.
- 3.To go back the other way, divide by 3.7662 × 10^-7, or multiply by 2.6552 × 10^+6.
Worked example: 25 foot-pounds to kilowatt-hours
- Formula
- ft·lbf × 3.7662 × 10^-7 = kWh
- Arithmetic
- 25 × 3.7662 × 10^-7 = 0.000009 kWh
- Answer
- 25 ft·lbf = 0.000009 kWh
The factor is rounded for display; the figure above is computed from the full value.
Foot-pounds to kilowatt-hours conversion table
| Foot-pounds | Kilowatt-hours |
|---|---|
| 1 ft·lbf | 0 kWh |
| 2 ft·lbf | 0.000001 kWh |
| 3 ft·lbf | 0.000001 kWh |
| 4 ft·lbf | 0.000002 kWh |
| 5 ft·lbf | 0.000002 kWh |
| 6 ft·lbf | 0.000002 kWh |
| 7 ft·lbf | 0.000003 kWh |
| 8 ft·lbf | 0.000003 kWh |
| 9 ft·lbf | 0.000003 kWh |
| 10 ft·lbf | 0.000004 kWh |
| 12 ft·lbf | 0.000005 kWh |
| 15 ft·lbf | 0.000006 kWh |
| 20 ft·lbf | 0.000008 kWh |
| 25 ft·lbf | 0.000009 kWh |
| 50 ft·lbf | 0.000019 kWh |
| 100 ft·lbf | 0.000038 kWh |
| 200 ft·lbf | 0.000075 kWh |
| 300 ft·lbf | 0.000113 kWh |
| 500 ft·lbf | 0.000188 kWh |
| 1000 ft·lbf | 0.000377 kWh |
| 2000 ft·lbf | 0.000753 kWh |
| 5000 ft·lbf | 0.001883 kWh |
| 10000 ft·lbf | 0.003766 kWh |
What is a foot-pound?
A pound-force acting through one foot. The same arithmetic as the torque unit of that name, and a different quantity: this one is work done, not twist applied.
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.
How many kilowatt-hours are in a foot-pound?
One foot-pound is 3.7662 × 10^-7 kilowatt-hours. Going the other way, one kilowatt-hour is 2.6552 × 10^+6 foot-pounds. 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 kilowatt-hours are in a foot-pound?
- 3.7662 × 10^-7. 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.
- How do I convert kilowatt-hours back to foot-pounds?
- Divide by 3.7662 × 10^-7, or multiply by 2.6552 × 10^+6 — they are the same operation.
Other energy conversions
Kilowatt-hours to foot-pounds — the same conversion the other way.