Zeptowatt is 1e-21 watt units.
Zeptowatts to Foot-pounds per second Converter — zW to ft-lb/s
Convert Zeptowatt (zW) to Foot-pound per second (ft-lb/s) using the exact conversion factor (1 zeptowatt = 7.375621e-22 foot-pound per second). See the formula, worked examples, and conversion table.
Zeptowatts to Foot-pounds per second converter
Converter
Engineering Converter
Convert common stress, force, torque, power, and energy units used in engineering.
Context values
Some unit families need one extra value for a physically accurate result.
Mechanical power rate.
Result = input x 1e-21 / 1.355817948.
Power units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Zeptowatts to Foot-pounds per second
Zeptowatt and Foot-pound per second both measure a quantity used in structural or mechanical engineering — commonly stress, pressure, force, torque, power, or energy — where converting between the unit conventions used in different regions, industries, or equipment specifications is a routine part of design work. Specifically: Zeptowatt is 1e-21 watt units, and mechanical power rate.
Formula
foot-pounds per second = zeptowatts × 7.375621e-22
This factor comes from each unit's defined relationship to the category's base unit: 1 zeptowatt equals 1e-21 base units, and 1 foot-pound per second equals 1.35581794833 base units, so dividing one by the other gives the direct zeptowatt-to-foot-pound per second factor of 7.375621e-22.
Simple example
1 zW × 7.375621e-22 = 7.375621e-22 ft-lb/s
1 zeptowatt = 7.375621e-22 foot-pounds per second.
Real-world example
100 zW × 7.375621e-22 = 7.375621e-20 ft-lb/s
100 zeptowatts = 7.375621e-20 foot-pounds per second.
Conversion table
| Zeptowatt (zW) | Foot-pound per second (ft-lb/s) |
|---|---|
| 1 zW | 7.375621e-22 ft-lb/s |
| 10 zW | 7.375621e-21 ft-lb/s |
| 50 zW | 3.687811e-20 ft-lb/s |
| 100 zW | 7.375621e-20 ft-lb/s |
| 500 zW | 3.687811e-19 ft-lb/s |
| 1,000 zW | 7.375621e-19 ft-lb/s |
Reverse conversion: Foot-pound per second to Zeptowatt
7.375621e-22 ft-lb/s × 1.355818e+21 = 0.9999999332 zW
7.375621e-22 foot-pounds per second = 0.9999999332 zeptowatts.
zeptowatts = foot-pounds per second × 1.355818e+21
For a page dedicated to this direction, see Foot-pound per second to Zeptowatt.
Understanding the Zeptowatt (zW)
Zeptowatt is 1e-21 watt units.
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 zeptowatt?
1 zeptowatt equals 7.375621e-22 foot-pounds per second, using the exact defined conversion factor rather than an estimate.
How do I convert zeptowatt to foot-pound per second?
Multiply the zeptowatt value by 7.375621e-22. The converter above does this instantly to whatever precision you set.
How do I convert foot-pound per second back to zeptowatt?
Use the reverse factor: 1 foot-pound per second equals 1.355818e+21 zeptowatts. You can also use the swap control in the converter above to flip the direction instantly.
What is a zeptowatt?
Zeptowatt (zW) is a unit of engineering.
What is a foot-pound per second?
Foot-pound per second (ft-lb/s) is a unit of engineering.
Is the zeptowatt to foot-pound per second conversion exact?
Yes. Both zeptowatt and foot-pound per second are defined by fixed standards rather than physical artifacts, so the factor of 7.375621e-22 used above is exact to as many digits as you choose to display.
Why do engineering unit conventions vary so much by region and industry?
Pressure, force, and stress can be expressed in metric (pascal, newton), US customary (psi, pound-force), or older and industry-specific units (atmosphere, torr, kip) depending on the country, industry, and even the equipment manufacturer, which is why engineers routinely need to convert between them when working across specs from different sources.