Convert force units like newton, kilogram-force, pound-force and dyne for free.
Force is one of the most fundamental concepts in classical physics, defined by Newton's Second Law (F = m × a) as the product of mass and acceleration. The standard unit, the newton, was named in honour of Isaac Newton, the scientist who formulated this law in the 17th century — a law so fundamental it still governs practically every mechanical, structural, and civil engineering calculation done today. Historically, before international standardization, different regions used force units based on weight: the pound-force (lbf) in English-speaking countries, the kilogram-force (kgf) in regions that adopted the metric system, and other regional variations. These units still persist in old technical specifications and in some industrial contexts, creating confusion when someone tries to convert between systems. This converter calculates between newtons, kilonewtons, pound-force, kilogram-force, and other force units, essential for structural engineers sizing beams and foundations, mechanical engineering professionals calculating loads on machines and equipment, safety technicians assessing cable and structure resistance, and any technical context where the magnitude of a force needs to be calculated or compared across different measurement systems.
Kilogram is a unit of mass; kilogram-force is a unit of force, equivalent to the weight of 1 kg under Earth's standard gravity (9.80665 N).
1 kilogram-force equals 9.80665 newtons.
It is a unit of force used in the imperial system, equivalent to approximately 4.448 newtons.