How do I convert Kilogram (kg) to Pound (lb)?

1 kg equals 2.204623 lb using SI-based conversion and precise factors.

What is the formula to convert Kilogram (kg) to Pound (lb)?

This is a linear unit conversion using a constant factor between units.

Yes, it uses exact definitions or standardized constants (e.g., 1 in = 25.4 mm).

Use the shareable URL pattern: /convert/kg-to-lb/1

Category: Mass

Value From To Precision

2.204623 lb

1 kg = 2.204623 lb

High-precision rounding: 6 decimals

We convert by pivoting through the SI base unit for Mass and applying exact factors where applicable.

Share this conversion: /convert/kg-to-lb/1

Mass quantifies matter. The SI kilogram is defined via fundamental constants.

Kilogram (kg)

SI base unit of mass defined via Planck’s constant.

History: Since 2019 defined through h; before that, by the IPK artifact.

Pound (lb)

Imperial/US mass unit; 1 lb = 0.45359237 kg (exact).

History: Defined exactly in 1959; originates from Roman libra.