Newtons to femtonewtons converter
Convert newtons (N) to femtonewtons (fN). Calculate any value, follow the unit-factor steps and check a conversion table.
Updated · How we checkUse a decimal point, such as 2.5. Enter a value in N; the result is in fN.
Formula
Worked example
Convert 1 N to fN:
1 N ≈ 1e+15 fN
Multiply your N value by the factor above. The calculator uses the full conversion factor before rounding the displayed answer.
Newtons to femtonewtons table
Reference values rounded to 10 significant digits. Use the converter above for other amounts.
| Newtons (N) | Femtonewtons (fN) |
|---|---|
| 0.1 | ≈ 1e+14 |
| 0.5 | ≈ 5e+14 |
| 1 | ≈ 1e+15 |
| 2 | ≈ 2e+15 |
| 5 | ≈ 5e+15 |
| 10 | ≈ 1e+16 |
| 25 | ≈ 2.5e+16 |
| 50 | ≈ 5e+16 |
| 100 | ≈ 1e+17 |
| 1000 | ≈ 1e+18 |
What newtons measure
Newtons (N) represent force. One unit equals 10^0 N. One newton accelerates a one-kilogram mass at one meter per second squared: N = kg·m/s².
Reading the result in femtonewtons
Femtonewtons (fN) represent force. One unit equals 10^-15 N. One newton accelerates a one-kilogram mass at one meter per second squared: N = kg·m/s².
Where this conversion helps
Compare applied forces and loads specified in different newton multiples. A force unit is not a mass unit. Kilogram-force uses standard gravity and is different from kilograms.
How the scale changes
The input unit has a factor of 1e0 N; the output unit has a factor of 1e-15 N. Multiply the entered number by the input factor, then divide by the output factor. The physical quantity stays the same while its numerical representation changes.
Reading very small or large results
Scientific notation keeps very small and large values readable: 2.5e-6 means 0.0000025. The converter calculates with 50 significant digits internally and displays up to 10. Exact unit definitions do not remove uncertainty from the original measurement.
References
Definitions and method references. Example rates and prices on this page are editable assumptions.