Mechanical power rate.
Foot-pounds per second to Femtowatts Converter — ft-lb/s to fW
Convert Foot-pound per second (ft-lb/s) to Femtowatt (fW) using the exact conversion factor (1 foot-pound per second = 1.355818e+15 femtowatt). See the formula, worked examples, and conversion table.
Foot-pounds per second to Femtowatts 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.
Femtowatt is 1e-15 watt units.
Result = input x 1.355817948 / 1e-15.
Power uses the watt as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Foot-pounds per second to Femtowatts
Foot-pound per second and Femtowatt 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: Mechanical power rate, and femtowatt is 1e-15 watt units.
Formula
femtowatts = foot-pounds per second × 1.355818e+15
This factor comes from each unit's defined relationship to the category's base unit: 1 foot-pound per second equals 1.35581794833 base units, and 1 femtowatt equals 1e-15 base units, so dividing one by the other gives the direct foot-pound per second-to-femtowatt factor of 1.355818e+15.
Simple example
1 ft-lb/s × 1.355818e+15 = 1.355818e+15 fW
1 foot-pound per second = 1.355818e+15 femtowatts.
Real-world example
100 ft-lb/s × 1.355818e+15 = 1.355818e+17 fW
100 foot-pounds per second = 1.355818e+17 femtowatts.
Conversion table
| Foot-pound per second (ft-lb/s) | Femtowatt (fW) |
|---|---|
| 1 ft-lb/s | 1.355818e+15 fW |
| 10 ft-lb/s | 1.355818e+16 fW |
| 100 ft-lb/s | 1.355818e+17 fW |
| 500 ft-lb/s | 6.77909e+17 fW |
| 1,000 ft-lb/s | 1.355818e+18 fW |
| 5,000 ft-lb/s | 6.77909e+18 fW |
Reverse conversion: Femtowatt to Foot-pound per second
1.355818e+15 fW × 7.375621e-16 = 1.000000038 ft-lb/s
1.355818e+15 femtowatts = 1.000000038 foot-pounds per second.
foot-pounds per second = femtowatts × 7.375621e-16
For a page dedicated to this direction, see Femtowatt to Foot-pound per second.
Understanding the Foot-pound per second (ft-lb/s)
Mechanical power rate.
Understanding the Femtowatt (fW)
Femtowatt is 1e-15 watt units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many femtowatts are in 1 foot-pound per second?
1 foot-pound per second equals 1.355818e+15 femtowatts, using the exact defined conversion factor rather than an estimate.
How do I convert foot-pound per second to femtowatt?
Multiply the foot-pound per second value by 1.355818e+15. The converter above does this instantly to whatever precision you set.
How do I convert femtowatt back to foot-pound per second?
Use the reverse factor: 1 femtowatt equals 7.375621e-16 foot-pounds per second. You can also use the swap control in the converter above to flip the direction instantly.
What is a foot-pound per second?
Foot-pound per second (ft-lb/s) is a unit of power.
What is a femtowatt?
Femtowatt (fW) is a unit of power.
Is the foot-pound per second to femtowatt conversion exact?
Yes. Both foot-pound per second and femtowatt are defined by fixed standards rather than physical artifacts, so the factor of 1.355818e+15 used above is exact to as many digits as you choose to display.