At One Place

9 lb to kg

9 pounds in kilograms
9 lb = 4.082331 kg
kg = lb × 0.45359237

9 pounds is 4.082331 kilograms. To get there, multiply by 0.45359237.

Values either side

Pounds near 9, converted to kilograms.
Pounds Kilograms
5 lb 2.267962
6 lb 2.721554
7 lb 3.175147
8 lb 3.628739
9 lb ← 4.082331
10 lb 4.535924
11 lb 4.989516
12 lb 5.443108
13 lb 5.896701

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 9 lb in kilograms?
9 lb is 4.082331 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