Skip to calculator

lbs to kg Converter

Convert pounds to kilograms (and back) for health, shipping, and international weight comparisons.

Formula shown0 inputs definedUpdated Dec 2025By CalcuTotal TeamFree, no sign-up

Quick Summary

Use this when you need:
  • Convert luggage limits from pounds to kilograms
  • Translate body weight between lb and kg
  • Check shipping documentation that mixes metric and imperial mass units
You’ll get:Mass

Calculator Tool

How this is calculated

Formula:

kg = lb × 0.45359237

In plain language:

The international pound is defined as exactly 0.45359237 kilograms. Multiply lb by that factor to get kg; divide to go back.

The formula is always visible so you can verify the math and explain your numbers to anyone who asks.

Advertisement

What these terms mean

Mass

Mass used in the calculation.

When to use this calculator

  • Convert luggage limits from pounds to kilograms
  • Translate body weight between lb and kg
  • Check shipping documentation that mixes metric and imperial mass units
Advertisement