Force Converter
Convert newtons, kilonewtons, dynes, kilogram-force and pound-force.
Quick answer
- Formula: Result = Value × (factor of from-unit in newtons) ÷ (factor of to-unit in newtons)
- Worked example — Converted force: 9.806650 (full example below).
Force Converter
| Converted force | 9.806650 |
| Summary | 1 kgf = 9.80665 N |
Holding a 1 kg mass takes a force of exactly 9.80665 N under standard gravity.
Convert force through the newton, the SI unit (1 N accelerates 1 kg at 1 m/s²). Engineering units piggyback on standard gravity, g = 9.80665 m/s² exactly: one kilogram-force is exactly 9.80665 N, and one pound-force is exactly 4.4482216152605 N. The CGS dyne is exactly 10⁻⁵ N.
A kilogram-force is the weight of a 1 kg mass on Earth — handy because the number matches the mass, but it changes on the Moon while newtons do not.
The formula
Worked example
Holding a 1 kg mass takes a force of exactly 9.80665 N under standard gravity.
The example is pre-loaded in the result panel — press Calculate with your own numbers to replace it.
Frequently asked questions
How much does a 70 kg person weigh in newtons?
About 686 N (70 × 9.80665). Weight is a force; the mass is 70 kg and stays the same anywhere.
What is a dyne used for?
The dyne is the CGS unit of force — the force that accelerates 1 gram at 1 cm/s². It survives in some physics and surface-tension work (dyn/cm).
Are lbf and lb the same?
Pound-force (lbf) is a force; pound (lb) is a mass. On Earth they have the same number under standard gravity, which is why the terms are often confused.
Category: Unit Conversions calculators
Sources & methodology
This calculator applies the formula shown on this page exactly as written, using the standard definitions for its inputs. Results are computed from the values you enter — no data is stored — and are rounded only for display.
Content last reviewed by CalcHub Editorial.
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