Force Converter

What this tool does

Force Converter changes forces between SI, gravitational and imperial units used in physics, engineering and load ratings. Gravitational units like kgf and lbf use standard gravity, so the results match published tables.

Force ratings appear in many guises. Physics uses newtons, structural engineers use kilonewtons and kips, lifting gear and older Indian specifications use kilogram-force or tonne-force, and US hardware uses pound-force. Because people often say "kg" when they mean kilogram-force, it is easy to mix up mass and force when reading a load rating.

This converter uses the newton (the force that accelerates 1 kg at 1 m/s²) as its base. Kilogram-force is defined with standard gravity as exactly 9.80665 N, and pound-force as 0.45359237 kg × 9.80665 m/s², about 4.44822 N. A kip is 1,000 lbf, a dyne is 10⁻⁵ N and a poundal is the force that accelerates one pound at one foot per second squared, about 0.1383 N. The full table and batch converter make it easy to check a whole specification sheet locally.

How to use Force Converter

1. Enter the force in the Value field.
2. Select the unit you have in From, for example Kilogram-force.
3. Select the unit you need in To, for example Newton, and read the Result.
4. Swap the units or change Decimal places as needed.
5. Check the all-units table for the same force in every unit.
6. Use Batch convert for a list of load ratings and download them as CSV.

Tips for better results

• For rough estimates, 1 kgf is close to 10 N and 1 kN is about 102 kgf.
• A load rating of "500 kg" on a hook or shelf really means 500 kgf, about 4.9 kN.
• Kips are common in US structural drawings; 1 kip is about 4.448 kN.

Common use cases

• Converting rope, sling and anchor ratings between kN and kgf.
• Solving physics problems that mix newtons, dynes and pound-force.
• Converting structural loads between kN and kips.
• Interpreting load cell and force gauge readings in different units.

Common mistakes to avoid

• Treating kilograms (mass) and kilogram-force (force) as interchangeable in calculations.
• Forgetting that 1 kN is 1,000 N when converting climbing or rigging ratings.
• Using 10 m/s² for gravity when an exact standard value is needed.