Mechanical power rate.
Foot-pounds per second to Zettawatts Converter — ft-lb/s to ZW
Convert Foot-pound per second (ft-lb/s) to Zettawatt (ZW) using the exact conversion factor (1 foot-pound per second = 1.355818e-21 zettawatt). See the formula, worked examples, and conversion table.
Foot-pounds per second to Zettawatts 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.
Zettawatt is 1e+21 watt units.
Result = input x 1.355817948 / 1e+21.
Power units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Foot-pounds per second to Zettawatts
Foot-pound per second and Zettawatt 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: Mechanical power rate, and zettawatt is 1e+21 watt units.
Formula
zettawatts = foot-pounds per second × 1.355818e-21
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 zettawatt equals 1e+21 base units, so dividing one by the other gives the direct foot-pound per second-to-zettawatt factor of 1.355818e-21.
Simple example
1 ft-lb/s × 1.355818e-21 = 1.355818e-21 ZW
1 foot-pound per second = 1.355818e-21 zettawatts.
Real-world example
100 ft-lb/s × 1.355818e-21 = 1.355818e-19 ZW
100 foot-pounds per second = 1.355818e-19 zettawatts.
Conversion table
| Foot-pound per second (ft-lb/s) | Zettawatt (ZW) |
|---|---|
| 1 ft-lb/s | 1.355818e-21 ZW |
| 10 ft-lb/s | 1.355818e-20 ZW |
| 50 ft-lb/s | 6.77909e-20 ZW |
| 100 ft-lb/s | 1.355818e-19 ZW |
| 500 ft-lb/s | 6.77909e-19 ZW |
| 1,000 ft-lb/s | 1.355818e-18 ZW |
Reverse conversion: Zettawatt to Foot-pound per second
1.355818e-21 ZW × 7.375621e+20 = 1.000000038 ft-lb/s
1.355818e-21 zettawatts = 1.000000038 foot-pounds per second.
foot-pounds per second = zettawatts × 7.375621e+20
For a page dedicated to this direction, see Zettawatt to Foot-pound per second.
Understanding the Foot-pound per second (ft-lb/s)
Mechanical power rate.
Understanding the Zettawatt (ZW)
Zettawatt is 1e+21 watt units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many zettawatts are in 1 foot-pound per second?
1 foot-pound per second equals 1.355818e-21 zettawatts, using the exact defined conversion factor rather than an estimate.
How do I convert foot-pound per second to zettawatt?
Multiply the foot-pound per second value by 1.355818e-21. The converter above does this instantly to whatever precision you set.
How do I convert zettawatt back to foot-pound per second?
Use the reverse factor: 1 zettawatt equals 7.375621e+20 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 engineering.
What is a zettawatt?
Zettawatt (ZW) is a unit of engineering.
Is the foot-pound per second to zettawatt conversion exact?
Yes. Both foot-pound per second and zettawatt are defined by fixed standards rather than physical artifacts, so the factor of 1.355818e-21 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.