Torque from one kilogram-force at one meter.
Kilogram-force meters to Zettanewton meters Converter — kgf m to ZN m
Convert Kilogram-force meter (kgf m) to Zettanewton meter (ZN m) using the exact conversion factor (1 kilogram-force meter = 9.80665e-21 zettanewton meter). See the formula, worked examples, conversion table, and common uses.
Kilogram-force meters to Zettanewton meters converter
Converter
Torque Converter
Convert newton meters, pound-feet, pound-inches, ounce-inches, and kilogram-force meters.
Context values
Some unit families need one extra value for a physically accurate result.
Zettanewton meter is 1e+21 newton meter units.
Result = input x 9.80665 / 1e+21.
Torque uses the newton meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Kilogram-force meters to Zettanewton meters
Kilogram-force meter and Zettanewton meter both measure torque, and the conversion is essential for anyone using a torque wrench specified in one unit against a bolt or engine spec given in the other. Kilogram-force meter is most often used for appears on some legacy torque specifications and equipment predating wider adoption of the newton-meter.
Formula
zettanewton meters = kilogram-force meters × 9.80665e-21
This factor comes from each unit's defined relationship to the category's base unit: 1 kilogram-force meter equals 9.80665 base units, and 1 zettanewton meter equals 1e+21 base units, so dividing one by the other gives the direct kilogram-force meter-to-zettanewton meter factor of 9.80665e-21.
Simple example
1 kgf m × 9.80665e-21 = 9.80665e-21 ZN m
1 kilogram-force meter = 9.80665e-21 zettanewton meters.
Real-world example
10 kgf m × 9.80665e-21 = 9.80665e-20 ZN m
10 kilogram-force meters = 9.80665e-20 zettanewton meters.
Conversion table
| Kilogram-force meter (kgf m) | Zettanewton meter (ZN m) |
|---|---|
| 1 kgf m | 9.80665e-21 ZN m |
| 5 kgf m | 4.903325e-20 ZN m |
| 10 kgf m | 9.80665e-20 ZN m |
| 50 kgf m | 4.903325e-19 ZN m |
| 100 kgf m | 9.80665e-19 ZN m |
| 500 kgf m | 4.903325e-18 ZN m |
Reverse conversion: Zettanewton meter to Kilogram-force meter
9.80665e-21 ZN m × 1.019716e+20 = 1 kgf m
9.80665e-21 zettanewton meters = 1 kilogram-force meters.
kilogram-force meters = zettanewton meters × 1.019716e+20
For a page dedicated to this direction, see Zettanewton meter to Kilogram-force meter.
Understanding the Kilogram-force meter
Kilogram-force meter (kgf m) measures torque. The torque produced by one kilogram-force acting at a perpendicular distance of one meter. It is classified as a non-SI unit, deprecated but still encountered.
Where it's used: Can be encountered in some older European and Japanese automotive and mechanical torque specifications
kgf·m vs. N·m. The newton-meter is the modern SI torque unit; kilogram-force meter is the older, gravity-dependent equivalent still occasionally seen on legacy specifications. 1 kgf·m equals exactly 9.80665 N·m.
Uses of the Kilogram-force meter today
- Appears on some legacy torque specifications and equipment predating wider adoption of the newton-meter
Understanding the Zettanewton meter (ZN m)
Zettanewton meter is 1e+21 newton meter units.
Kilogram-force meter — sources
- BIPM SI Brochure — Kilogram-force and its derivatives are non-SI units whose use is discouraged in favor of SI force/torque units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many zettanewton meters are in 1 kilogram-force meter?
1 kilogram-force meter equals 9.80665e-21 zettanewton meters, using the exact defined conversion factor rather than an estimate.
How do I convert kilogram-force meter to zettanewton meter?
Multiply the kilogram-force meter value by 9.80665e-21. The converter above does this instantly to whatever precision you set.
How do I convert zettanewton meter back to kilogram-force meter?
Use the reverse factor: 1 zettanewton meter equals 1.019716e+20 kilogram-force meters. You can also use the swap control in the converter above to flip the direction instantly.
What is a kilogram-force meter?
Kilogram-force meter (kgf m) measures torque. The torque produced by one kilogram-force acting at a perpendicular distance of one meter. It is classified as a non-SI unit, deprecated but still encountered.
What is a zettanewton meter?
Zettanewton meter (ZN m) is a unit of torque.
Is the kilogram-force meter to zettanewton meter conversion exact?
Yes. Both kilogram-force meter and zettanewton meter are defined by fixed standards rather than physical artifacts, so the factor of 9.80665e-21 used above is exact to as many digits as you choose to display.
What is the difference between kgf·m vs. n·m?
The newton-meter is the modern SI torque unit; kilogram-force meter is the older, gravity-dependent equivalent still occasionally seen on legacy specifications. 1 kgf·m equals exactly 9.80665 N·m.
Where is the kilogram-force meter still used today?
Can be encountered in some older European and Japanese automotive and mechanical torque specifications