Force Unit Converter | Convert between Newton, Pound-force, Kilogram-force and more

Force Unit Basics

Force is a physical quantity that causes objects to accelerate. The SI unit of force is the Newton (N), defined as the force required to accelerate a 1 kg mass at 1 m/s².

Common Force Conversions

• 1 kgf = 9.80665 N (force of gravity on 1 kg at Earth's surface)
• 1 lbf = 4.44822 N
• 1 kN = 1000 N
• 1 dyne = 10^-5 N (CGS unit). 1 ton-force = 9,806.65 N.

Newton (SI Unit)

Named after Isaac Newton, 1 N is approximately the force needed to hold a 100g apple. In structural engineering, forces are often measured in kilonewtons (kN) or meganewtons (MN). Bridges are designed to handle millions of Newtons.

Kilogram-force (kgf)

The kilogram-force is the gravitational force on a 1 kg mass at standard gravity. 1 kgf = 9.80665 N. Although not an SI unit, it is still used in some technical fields. Weight in kgf numerically equals mass in kg.

Applications in Engineering

Forces are central to structural, mechanical, and aerospace engineering. Aircraft lift and drag forces are measured in kilonewtons. Rocket thrust is measured in kilonewtons to meganewtons. Bolt preload in cars is typically 10–100 N·m of torque.