What is the relationship between kilogram-force and newtons?
A kilogram-force (kgf) is defined as the force exerted by gravity on a mass of 1 kilogram at Earth's surface. Since standard gravity is 9.80665 m/s², one kilogram-force equals exactly 9.80665 newtons. The newton, by contrast, is the SI unit of force defined as the force needed to accelerate a 1 kg mass at 1 m/s². See also our find Rolling Resistance Force with Rolling Resistance Calculator.
How do I convert kg to newtons?
Multiply the kilogram-force value by 9.80665 to get newtons. For example, 10 kgf × 9.80665 = 98.0665 N. You can also use this calculator by entering your kgf value in the Kilograms-force field and reading the Newtons result directly.
How many kg is equal to 1 newton?
1 newton is equal to approximately 0.10197 kilogram-force (kgf). This is calculated by dividing 1 by the standard gravitational constant: 1 ÷ 9.80665 ≈ 0.10197 kgf.
How much force is a newton?
One newton is the force required to accelerate a 1-kilogram mass at a rate of 1 metre per second squared (1 m/s²). In everyday terms, a newton is roughly the force of gravity on a small apple (about 102 grams).
Why is the gravitational constant 9.80665 m/s² used?
The value 9.80665 m/s² is the internationally adopted standard acceleration of gravity, defined by the General Conference of Weights and Measures in 1901. It represents a standardised reference value used in unit conversion, even though actual gravitational acceleration varies slightly depending on location on Earth.
Can I convert newtons back to kilograms-force?
Yes. To convert newtons to kgf, divide the newton value by 9.80665. For example, 50 N ÷ 9.80665 ≈ 5.0986 kgf. This calculator supports both directions — simply enter your newton value in the Newtons field to get the kgf equivalent.
Is kilogram the same as kilogram-force?
No. A kilogram (kg) is a unit of mass, while kilogram-force (kgf) is a unit of force. In everyday language, people often say 'kilograms' when referring to weight (which is a force), but scientifically they are distinct. When converting to newtons, we treat the kilogram value as kilogram-force, applying the standard gravity constant. Check out our Force Calculator as well.