Kilograms to Newtons
Determine the weight force of an object on Earth by multiplying its mass by standard gravity. Engineers, physics students, and mechanics use this conversion to size supports, analyze loads, and compute torque.
Educational purposes only. Not professional advice.
Examples
- 1 kg component ⇒ 9.81 N of weight force
- 5 kg tool ⇒ 49.03 N acting on a work surface
- 0.2 kg sensor ⇒ 1.96 N, helpful for delicate mounting
FAQ
Why multiply by 9.80665?
It's the internationally recognized standard gravity constant for Earth.
Can I input decimal masses?
Yes. The calculator accepts fractional kilograms for precise work.
How do I convert Newtons back to kilograms?
Divide the force value by 9.80665 to retrieve the mass in kilograms.
Additional Information
- Standard gravity is defined as 9.80665 m/s² at sea level and is the factor used in this conversion.
- Weight is a force (Newtons), while mass remains constant regardless of location.
- To adapt for other planets, replace 9.80665 with the local gravitational acceleration (for Mars, ~3.721 m/s²).
- Review the history, standards, and applications behind this result in our [The Newton (N): SI Unit of Force article](/units-and-measures/the-newton-si-unit-of-force/).