Force Converter
Newton (N)
Definition: The newton (symbol: N) is the International System of Units (SI) derived unit of force. It is defined as the force needed to accelerate one kilogram of mass at the rate of one meter per second squared.
History/origin: The unit is named after Sir Isaac Newton in recognition of his groundbreaking work on classical mechanics, specifically his second law of motion. It was formally adopted by the General Conference on Weights and Measures in 1948.
Current use: The newton is the absolute global standard for measuring force in physics, mechanical engineering, and general science.
Pound-force (lbf)
Definition: The pound-force (symbol: lbf) is a unit of force used in some systems of measurement, including English engineering units and the United States customary system. It represents the gravitational force exerted on a mass of one avoirdupois pound on Earth.
History/origin: The unit originated from the historical equivalence between mass and weight. To avoid confusion in complex engineering calculations, the distinction between pound-mass (lbm) and pound-force (lbf) was strictly defined in the 20th century.
Current use: Pound-force is extensively used in the United States for aerospace and mechanical engineering, and forms the basis for pressure measurements like PSI (pounds per square inch) and torque (foot-pounds).
Newton (N) to Pound-force (lbf) Conversion Table
| Newton (N) [n] | Pound-force (lbf) [lbf] |
|---|---|
| 0.01 n | 0.00224809 lbf |
| 0.1 n | 0.02248089 lbf |
| 1 n | 0.22480894 lbf |
| 2 n | 0.44961789 lbf |
| 3 n | 0.67442683 lbf |
| 5 n | 1.12404471 lbf |
| 10 n | 2.24808943 lbf |
| 20 n | 4.49617886 lbf |
| 50 n | 11.24044714 lbf |
| 100 n | 22.48089429 lbf |
| 1000 n | 224.80894286 lbf |
How to Convert Newton (N) to Pound-force (lbf)
1 n = 0.22480894 lbf
1 lbf = 4.44822162 n
Example: convert 15 n to lbf:
15 n = 15 × 0.22480894 lbf = 3.37213414 lbf
Did You Know?
- Did you know? One Newton (1 N) is approximately the amount of force needed to hold a medium-sized apple (about 102 grams) against Earth's gravity!
- Physics confusion: A "Pound" can measure both mass (lb) and force (lbf). Pound-force (lbf) specifically measures the gravitational pull on a one-pound mass on Earth.