About this calculator
Enter a value and choose the units.
How to use it
- Enter the value.
- Choose the unit it is in and the unit you want.
- Read the result, or see every unit in the table.
The formula
Result = value × (newtons in the “from” unit) ÷ (newtons in the “to” unit)
- 1 kgf
- 9.80665 N
- 1 lbf
- 4.448 N
Worked example
A 10 kg load
- 10 kgf = 98.07 N.
- = 22.05 lbf.
What the result means
The factors are exact international definitions, so results are as accurate as the digits shown.
Assumptions
- Standard gravity of 9.80665 m/s².
Limitations
- Weight on Earth varies slightly by place.
Frequently asked questions
How many newtons is 1 kg?
The weight of 1 kg is 9.81 N.
What is a kilonewton?
1,000 N, about the weight of 102 kg.
Is kgf an SI unit?
No; the SI unit is the newton.
Last reviewed on 3 October 2026. Found a mistake? Tell us.