Attonewton is 1e-18 newton units.
Attonewtons to Zettanewtons Converter — aN to ZN
Convert Attonewton (aN) to Zettanewton (ZN) using the exact conversion factor (1 attonewton = 1e-39 zettanewton). See the formula, worked examples, and conversion table.
Attonewtons to Zettanewtons 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.
Zettanewton is 1e+21 newton units.
Result = input x 1e-18 / 1e+21.
Force units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Attonewtons to Zettanewtons
Attonewton and Zettanewton 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: Attonewton is 1e-18 newton units, and zettanewton is 1e+21 newton units.
Formula
zettanewtons = attonewtons × 1e-39
This factor comes from each unit's defined relationship to the category's base unit: 1 attonewton equals 1e-18 base units, and 1 zettanewton equals 1e+21 base units, so dividing one by the other gives the direct attonewton-to-zettanewton factor of 1e-39.
Simple example
1 aN × 1e-39 = 1e-39 ZN
1 attonewton = 1e-39 zettanewtons.
Real-world example
100 aN × 1e-39 = 1e-37 ZN
100 attonewtons = 1e-37 zettanewtons.
Conversion table
| Attonewton (aN) | Zettanewton (ZN) |
|---|---|
| 1 aN | 1e-39 ZN |
| 10 aN | 1e-38 ZN |
| 50 aN | 5e-38 ZN |
| 100 aN | 1e-37 ZN |
| 500 aN | 5e-37 ZN |
| 1,000 aN | 1e-36 ZN |
Reverse conversion: Zettanewton to Attonewton
1e-39 ZN × 1e+39 = 1 aN
1e-39 zettanewtons = 1 attonewtons.
attonewtons = zettanewtons × 1e+39
For a page dedicated to this direction, see Zettanewton to Attonewton.
Understanding the Attonewton (aN)
Attonewton is 1e-18 newton units.
Understanding the Zettanewton (ZN)
Zettanewton is 1e+21 newton units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many zettanewtons are in 1 attonewton?
1 attonewton equals 1e-39 zettanewtons, using the exact defined conversion factor rather than an estimate.
How do I convert attonewton to zettanewton?
Multiply the attonewton value by 1e-39. The converter above does this instantly to whatever precision you set.
How do I convert zettanewton back to attonewton?
Use the reverse factor: 1 zettanewton equals 1e+39 attonewtons. You can also use the swap control in the converter above to flip the direction instantly.
What is a attonewton?
Attonewton (aN) is a unit of engineering.
What is a zettanewton?
Zettanewton (ZN) is a unit of engineering.
Is the attonewton to zettanewton conversion exact?
Yes. Both attonewton and zettanewton are defined by fixed standards rather than physical artifacts, so the factor of 1e-39 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.