Millinewton is 0.001 newton units.
Millinewtons to Exanewtons Converter — mN to EN
Convert Millinewton (mN) to Exanewton (EN) using the exact conversion factor (1 millinewton = 1e-21 exanewton). See the formula, worked examples, and conversion table.
Millinewtons to Exanewtons 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.
Exanewton is 1000000000000000000 newton units.
Result = input x 0.001 / 1e+18.
Force units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Millinewtons to Exanewtons
Millinewton and Exanewton 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: Millinewton is 0.001 newton units, and exanewton is 1000000000000000000 newton units.
Formula
exanewtons = millinewtons × 1e-21
This factor comes from each unit's defined relationship to the category's base unit: 1 millinewton equals 0.001 base units, and 1 exanewton equals 1e+18 base units, so dividing one by the other gives the direct millinewton-to-exanewton factor of 1e-21.
Simple example
1 mN × 1e-21 = 1e-21 EN
1 millinewton = 1e-21 exanewtons.
Real-world example
100 mN × 1e-21 = 1e-19 EN
100 millinewtons = 1e-19 exanewtons.
Conversion table
| Millinewton (mN) | Exanewton (EN) |
|---|---|
| 1 mN | 1e-21 EN |
| 10 mN | 1e-20 EN |
| 50 mN | 5e-20 EN |
| 100 mN | 1e-19 EN |
| 500 mN | 5e-19 EN |
| 1,000 mN | 1e-18 EN |
Reverse conversion: Exanewton to Millinewton
1e-21 EN × 1e+21 = 1 mN
1e-21 exanewtons = 1 millinewtons.
millinewtons = exanewtons × 1e+21
For a page dedicated to this direction, see Exanewton to Millinewton.
Understanding the Millinewton (mN)
Millinewton is 0.001 newton units.
Understanding the Exanewton (EN)
Exanewton is 1000000000000000000 newton units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many exanewtons are in 1 millinewton?
1 millinewton equals 1e-21 exanewtons, using the exact defined conversion factor rather than an estimate.
How do I convert millinewton to exanewton?
Multiply the millinewton value by 1e-21. The converter above does this instantly to whatever precision you set.
How do I convert exanewton back to millinewton?
Use the reverse factor: 1 exanewton equals 1e+21 millinewtons. You can also use the swap control in the converter above to flip the direction instantly.
What is a millinewton?
Millinewton (mN) is a unit of engineering.
What is a exanewton?
Exanewton (EN) is a unit of engineering.
Is the millinewton to exanewton conversion exact?
Yes. Both millinewton and exanewton are defined by fixed standards rather than physical artifacts, so the factor of 1e-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.