At One Place

1 lb to kg

1 pound in kilograms
1 lb = 0.45359 kg
kg = lb × 0.45359237

1 pound is 0.45359 kilograms. To get there, multiply by 0.45359237.

Values either side

Pounds near 1, converted to kilograms.
Pounds Kilograms
0.5 lb 0.2268
1 lb ← 0.45359
1.5 lb 0.68039
2 lb 0.90718
2.5 lb 1.133981
3 lb 1.360777

How the conversion works

The relationship is kg = lb × 0.45359237. Both units measure mass, so the conversion is a fixed factor that never changes. The figure is exact rather than approximate: since the international yard and pound agreement of 1959, an inch is defined as exactly 25.4 millimetres and a pound as exactly 0.45359237 kilograms, and every other imperial and US customary unit here is derived from those two.

Common questions

What is 1 lb in kilograms?
1 lb is 0.45359 kg.
How do you convert pounds to kilograms?
Multiply by 0.45359237.

Related pages

Sources

  1. Guide for the Use of the International System of Units (SP 811) — NIST (Public domain (US Government))
  2. The International System of Units (SI Brochure) — Bureau International des Poids et Mesures
  3. Calculated on this page — At One Place

How these figures are compiled and checked