Kg to Newtons Converter
Use our kg to newtons converter to convert kg into N instantly. Learn how to get kg to newtons using gravity (g), the kg to N formula, what 1kg in newtons means, and examples like 5 kg to newtons and 50 kg to newtons.
Kg to Newtons: What’s the Difference?
Kilograms (kg) measure mass, while newtons (N) measure force. When people say “convert kg to newtons,” they usually mean converting a mass into its weight force under gravity.
Weight is the force caused by gravity acting on mass, which is why you need gravitational acceleration (g) to convert kg into N.
This kg to newton conversion calculator converts kg to newtons using the standard Earth gravity value (g ≈ 9.80665 m/s²) unless you choose a different g for your use case.
Kg to N Formula
To convert kg to newtons (weight force), multiply mass by gravitational acceleration.
On Earth, g ≈ 9.80665 m/s², so 1 kg weighs about 9.81 N.
Use this if you want to convert force back to equivalent mass under gravity.
So 1kg in newtons (weight on Earth) is about 9.81 N.
A common conversion for small loads.
Useful for larger loads and engineering estimates.
How to Use the Kg to Newton Conversion Calculator
- 1
Enter the mass in kilograms (kg).
- 2
Use Earth gravity (g ≈ 9.80665 m/s²) unless you need a different value.
- 3
The converter calculates force using the kg to N formula: N = kg × g.
- 4
Read the result in newtons (N).
Frequently Asked Questions
Multiply kg by gravitational acceleration: N = kg × g. On Earth, g ≈ 9.80665, so N ≈ kg × 9.80665.
N = kg × g (weight force).
It depends on gravity (g). On Earth it’s about 9.81 N per kg, but on other planets or in different conditions g changes.
On Earth, 1 kg corresponds to about 9.81 N of weight.
On Earth, 1 N corresponds to about 0.10197 kg of mass-equivalent under gravity (kg = N ÷ 9.80665).
It’s the inverse relationship (kg per N) under a chosen gravity value: kg/N = 1/g. On Earth, that’s about 0.10197 kg per N.
Yes. This kg into newton converter uses N = kg × g to compute the force.