Attonewton is 1e-18 newton units.
Attonewtons to Ronnanewtons Converter — aN to RN
Convert Attonewton (aN) to Ronnanewton (RN) using the exact conversion factor (1 attonewton = 1e-45 ronnanewton). See the formula, worked examples, and conversion table.
Attonewtons to Ronnanewtons 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.
Ronnanewton is 1e+27 newton units.
Result = input x 1e-18 / 1e+27.
Force units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Attonewtons to Ronnanewtons
Attonewton and Ronnanewton 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 ronnanewton is 1e+27 newton units.
Formula
ronnanewtons = attonewtons × 1e-45
This factor comes from each unit's defined relationship to the category's base unit: 1 attonewton equals 1e-18 base units, and 1 ronnanewton equals 1e+27 base units, so dividing one by the other gives the direct attonewton-to-ronnanewton factor of 1e-45.
Simple example
1 aN × 1e-45 = 1e-45 RN
1 attonewton = 1e-45 ronnanewtons.
Real-world example
100 aN × 1e-45 = 1e-43 RN
100 attonewtons = 1e-43 ronnanewtons.
Conversion table
| Attonewton (aN) | Ronnanewton (RN) |
|---|---|
| 1 aN | 1e-45 RN |
| 10 aN | 1e-44 RN |
| 50 aN | 5e-44 RN |
| 100 aN | 1e-43 RN |
| 500 aN | 5e-43 RN |
| 1,000 aN | 1e-42 RN |
Reverse conversion: Ronnanewton to Attonewton
1e-45 RN × 1e+45 = 1 aN
1e-45 ronnanewtons = 1 attonewton.
attonewtons = ronnanewtons × 1e+45
For a page dedicated to this direction, see Ronnanewton to Attonewton.
Understanding the Attonewton (aN)
Attonewton is 1e-18 newton units.
Understanding the Ronnanewton (RN)
Ronnanewton is 1e+27 newton units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many ronnanewtons are in 1 attonewton?
1 attonewton equals 1e-45 ronnanewtons, using the exact defined conversion factor rather than an estimate.
How do I convert attonewton to ronnanewton?
Multiply the attonewton value by 1e-45. The converter above does this instantly to whatever precision you set.
How do I convert ronnanewton back to attonewton?
Use the reverse factor: 1 ronnanewton equals 1e+45 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 ronnanewton?
Ronnanewton (RN) is a unit of engineering.
Is the attonewton to ronnanewton conversion exact?
Yes. Both attonewton and ronnanewton are defined by fixed standards rather than physical artifacts, so the factor of 1e-45 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.