Zeptonewton is 1e-21 newton units.
Zeptonewtons to Petanewtons Converter — zN to PN
Convert Zeptonewton (zN) to Petanewton (PN) using the exact conversion factor (1 zeptonewton = 1e-36 petanewton). See the formula, worked examples, and conversion table.
Zeptonewtons to Petanewtons 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.
Petanewton is 1000000000000000 newton units.
Result = input x 1e-21 / 1e+15.
Force units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Zeptonewtons to Petanewtons
Zeptonewton and Petanewton 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: Zeptonewton is 1e-21 newton units, and petanewton is 1000000000000000 newton units.
Formula
petanewtons = zeptonewtons × 1e-36
This factor comes from each unit's defined relationship to the category's base unit: 1 zeptonewton equals 1e-21 base units, and 1 petanewton equals 1e+15 base units, so dividing one by the other gives the direct zeptonewton-to-petanewton factor of 1e-36.
Simple example
1 zN × 1e-36 = 1e-36 PN
1 zeptonewton = 1e-36 petanewtons.
Real-world example
100 zN × 1e-36 = 1e-34 PN
100 zeptonewtons = 1e-34 petanewtons.
Conversion table
| Zeptonewton (zN) | Petanewton (PN) |
|---|---|
| 1 zN | 1e-36 PN |
| 10 zN | 1e-35 PN |
| 50 zN | 5e-35 PN |
| 100 zN | 1e-34 PN |
| 500 zN | 5e-34 PN |
| 1,000 zN | 1e-33 PN |
Reverse conversion: Petanewton to Zeptonewton
1e-36 PN × 1e+36 = 1 zN
1e-36 petanewtons = 1 zeptonewton.
zeptonewtons = petanewtons × 1e+36
For a page dedicated to this direction, see Petanewton to Zeptonewton.
Understanding the Zeptonewton (zN)
Zeptonewton is 1e-21 newton units.
Understanding the Petanewton (PN)
Petanewton is 1000000000000000 newton units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many petanewtons are in 1 zeptonewton?
1 zeptonewton equals 1e-36 petanewtons, using the exact defined conversion factor rather than an estimate.
How do I convert zeptonewton to petanewton?
Multiply the zeptonewton value by 1e-36. The converter above does this instantly to whatever precision you set.
How do I convert petanewton back to zeptonewton?
Use the reverse factor: 1 petanewton equals 1e+36 zeptonewtons. You can also use the swap control in the converter above to flip the direction instantly.
What is a zeptonewton?
Zeptonewton (zN) is a unit of engineering.
What is a petanewton?
Petanewton (PN) is a unit of engineering.
Is the zeptonewton to petanewton conversion exact?
Yes. Both zeptonewton and petanewton are defined by fixed standards rather than physical artifacts, so the factor of 1e-36 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.