Femtonewton is 1e-15 newton units.
Femtonewtons to Kips Converter — fN to kip
Convert Femtonewton (fN) to Kip (kip) using the exact conversion factor (1 femtonewton = 2.248089e-19 kip). See the formula, worked examples, and conversion table.
Femtonewtons to Kips 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.
A kip is 1,000 pound-force.
Result = input x 1e-15 / 4448.221615.
Force units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Femtonewtons to Kips
Femtonewton and Kip 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: Femtonewton is 1e-15 newton units, and a kip is 1,000 pound-force.
Formula
kips = femtonewtons × 2.248089e-19
This factor comes from each unit's defined relationship to the category's base unit: 1 femtonewton equals 1e-15 base units, and 1 kip equals 4448.22161526 base units, so dividing one by the other gives the direct femtonewton-to-kip factor of 2.248089e-19.
Simple example
1 fN × 2.248089e-19 = 2.248089e-19 kip
1 femtonewton = 2.248089e-19 kips.
Real-world example
100 fN × 2.248089e-19 = 2.248089e-17 kip
100 femtonewtons = 2.248089e-17 kips.
Conversion table
| Femtonewton (fN) | Kip (kip) |
|---|---|
| 1 fN | 2.248089e-19 kip |
| 10 fN | 2.248089e-18 kip |
| 50 fN | 1.124045e-17 kip |
| 100 fN | 2.248089e-17 kip |
| 500 fN | 1.124045e-16 kip |
| 1,000 fN | 2.248089e-16 kip |
Reverse conversion: Kip to Femtonewton
2.248089e-19 kip × 4.448222e+18 = 0.9999998083 fN
2.248089e-19 kips = 0.9999998083 femtonewtons.
femtonewtons = kips × 4.448222e+18
For a page dedicated to this direction, see Kip to Femtonewton.
Understanding the Femtonewton (fN)
Femtonewton is 1e-15 newton units.
Understanding the Kip (kip)
A kip is 1,000 pound-force.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many kips are in 1 femtonewton?
1 femtonewton equals 2.248089e-19 kips, using the exact defined conversion factor rather than an estimate.
How do I convert femtonewton to kip?
Multiply the femtonewton value by 2.248089e-19. The converter above does this instantly to whatever precision you set.
How do I convert kip back to femtonewton?
Use the reverse factor: 1 kip equals 4.448222e+18 femtonewtons. You can also use the swap control in the converter above to flip the direction instantly.
What is a femtonewton?
Femtonewton (fN) is a unit of engineering.
What is a kip?
Kip (kip) is a unit of engineering.
Is the femtonewton to kip conversion exact?
Yes. Both femtonewton and kip are defined by fixed standards rather than physical artifacts, so the factor of 2.248089e-19 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.