Attonewton is 1e-18 newton units.
Attonewtons to Femtonewtons Converter — aN to fN
Convert Attonewton (aN) to Femtonewton (fN) using the exact conversion factor (1 attonewton = 0.001 femtonewton). See the formula, worked examples, and conversion table.
Attonewtons to Femtonewtons converter
Converter
Force Converter
Convert newtons, dynes, pound-force, kilogram-force, kips, and ounce-force.
Context values
Some unit families need one extra value for a physically accurate result.
Femtonewton is 1e-15 newton units.
Result = input x 1e-18 / 1e-15.
Force uses the newton as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Attonewtons to Femtonewtons
Attonewton and Femtonewton both measure force, and the conversion matters whenever an SI-trained engineer needs to compare notes with a US-trained one, or vice versa. Specifically: Attonewton is 1e-18 newton units, and femtonewton is 1e-15 newton units.
Formula
femtonewtons = attonewtons × 0.001
This factor comes from each unit's defined relationship to the category's base unit: 1 attonewton equals 1e-18 base units, and 1 femtonewton equals 1e-15 base units, so dividing one by the other gives the direct attonewton-to-femtonewton factor of 0.001.
Simple example
1 aN × 0.001 = 0.001 fN
1 attonewton = 0.001 femtonewtons.
Real-world example
10 aN × 0.001 = 0.01 fN
10 attonewtons = 0.01 femtonewtons.
Conversion table
| Attonewton (aN) | Femtonewton (fN) |
|---|---|
| 1 aN | 0.001 fN |
| 5 aN | 0.005 fN |
| 10 aN | 0.01 fN |
| 50 aN | 0.05 fN |
| 100 aN | 0.1 fN |
| 1,000 aN | 1 fN |
Reverse conversion: Femtonewton to Attonewton
0.001 fN × 1000 = 1 aN
0.001 femtonewtons = 1 attonewton.
attonewtons = femtonewtons × 1000
For a page dedicated to this direction, see Femtonewton to Attonewton.
Understanding the Attonewton (aN)
Attonewton is 1e-18 newton units.
Understanding the Femtonewton (fN)
Femtonewton is 1e-15 newton units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many femtonewtons are in 1 attonewton?
1 attonewton equals 0.001 femtonewtons, using the exact defined conversion factor rather than an estimate.
How do I convert attonewton to femtonewton?
Multiply the attonewton value by 0.001. The converter above does this instantly to whatever precision you set.
How do I convert femtonewton back to attonewton?
Use the reverse factor: 1 femtonewton equals 1,000 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 force.
What is a femtonewton?
Femtonewton (fN) is a unit of force.
Is the attonewton to femtonewton conversion exact?
Yes. Both attonewton and femtonewton are defined by fixed standards rather than physical artifacts, so the factor of 0.001 used above is exact to as many digits as you choose to display.