Power rate using BTU per hour.
BTU per hour to Foot-pounds per second Converter — BTU/h to ft-lb/s
Convert BTU per hour (BTU/h) to Foot-pound per second (ft-lb/s) using the exact conversion factor (1 btu per hour = 0.2161581284 foot-pound per second). See the formula, worked examples, and conversion table.
BTU per hour to Foot-pounds per second converter
Converter
Power Converter
Convert watts, horsepower, refrigeration tons, BTU per hour, and engineering power units.
Context values
Some unit families need one extra value for a physically accurate result.
Mechanical power rate.
Result = input x 0.2930710702 / 1.355817948.
Power uses the watt as the base unit.
Reserved above the conversion cards and below the converter.
About Converting BTU per hour to Foot-pounds per second
BTU per hour and Foot-pound per second both describe power output, and the conversion is a routine part of comparing an engine or motor's spec sheet across countries that use different power units. Specifically: Power rate using BTU per hour, and mechanical power rate.
Formula
foot-pounds per second = btu per hour × 0.216158128407
This factor comes from each unit's defined relationship to the category's base unit: 1 btu per hour equals 0.293071070172 base units, and 1 foot-pound per second equals 1.35581794833 base units, so dividing one by the other gives the direct btu per hour-to-foot-pound per second factor of 0.216158128407.
Simple example
1 BTU/h × 0.2161581284 = 0.2161581284 ft-lb/s
1 btu per hour = 0.2161581284 foot-pounds per second.
Real-world example
100 BTU/h × 0.2161581284 = 21.61581284 ft-lb/s
100 btu per hour = 21.61581284 foot-pounds per second.
Conversion table
| BTU per hour (BTU/h) | Foot-pound per second (ft-lb/s) |
|---|---|
| 1 BTU/h | 0.2161581284 ft-lb/s |
| 10 BTU/h | 2.161581284 ft-lb/s |
| 100 BTU/h | 21.61581284 ft-lb/s |
| 500 BTU/h | 108.0790642 ft-lb/s |
| 1,000 BTU/h | 216.1581284 ft-lb/s |
| 5,000 BTU/h | 1,080.790642 ft-lb/s |
Reverse conversion: Foot-pound per second to BTU per hour
0.2161581284 ft-lb/s × 4.626242868 = 1 BTU/h
0.2161581284 foot-pounds per second = 1 btu per hour.
btu per hour = foot-pounds per second × 4.62624286844
For a page dedicated to this direction, see Foot-pound per second to BTU per hour.
Understanding the BTU per hour (BTU/h)
Power rate using BTU per hour.
Understanding the Foot-pound per second (ft-lb/s)
Mechanical power rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many foot-pounds per second are in 1 btu per hour?
1 btu per hour equals 0.2161581284 foot-pounds per second, using the exact defined conversion factor rather than an estimate.
How do I convert btu per hour to foot-pound per second?
Multiply the btu per hour value by 0.2161581284. The converter above does this instantly to whatever precision you set.
How do I convert foot-pound per second back to btu per hour?
Use the reverse factor: 1 foot-pound per second equals 4.626242868 btu per hour. You can also use the swap control in the converter above to flip the direction instantly.
What is a btu per hour?
BTU per hour (BTU/h) is a unit of power.
What is a foot-pound per second?
Foot-pound per second (ft-lb/s) is a unit of power.
Is the btu per hour to foot-pound per second conversion exact?
Yes. Both btu per hour and foot-pound per second are defined by fixed standards rather than physical artifacts, so the factor of 0.2161581284 used above is exact to as many digits as you choose to display.