Newtons to Pound-force Converter
1 N = 0.224809 lbf. Gravity on Earth exerts 9.80665 N per kg, so a 1 kg mass weighs 2.205 lbf.
Inverse conversion
1 lbf = 4.44822 N. A 100 lbf load equals 444.8 N. Gravity on Earth: 1 lb mass weighs 1 lbf = 4.448 N.
Note
lbf (pound-force) is a force unit. Do not confuse with lb (pound-mass).
Formula
Formula
lbf = N × 0.224809
Worked example
To convert 500 N to lbf: 500 × 0.224809 = 112.4 lbf.
Quick reference table
| N | lbf |
|---|---|
| 1 | 0.224809 |
| 5 | 1.124045 |
| 10 | 2.248089 |
| 50 | 11.240447 |
| 100 | 22.480894 |
| 250 | 56.202236 |
| 500 | 112.404472 |
| 1000 | 224.808943 |
| 5000 | 1124.044715 |
Unit definitions
Newton (N)
The newton (N) is the SI unit of force. 1 N accelerates a 1 kg mass at 1 m/s².
Pound-force (lbf)
The pound-force (lbf) is the gravitational force on a 1 lb mass at standard gravity (9.80665 m/s²). 1 lbf = 4.44822 N.
Common use cases
- Structural load analysis
- Mechanical engineering specifications
- Physics problem sets
- Converting between SI and imperial force values