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Weight Unit Converter

What the Weight Unit Converter does

The Weight Unit Converter converts a value between common weight and mass units — kilograms, pounds, ounces, grams, and more — instantly, without needing to remember the conversion factors.

How to use it

  1. Enter the value you want to convert.
  2. Select the unit you're converting from.
  3. The converted values in other common units appear automatically.

Common uses

  • Converting body weight between kilograms and pounds for fitness tracking.
  • Converting a recipe ingredient weight between grams and ounces.
  • Checking a shipping package weight given in an unfamiliar unit before booking a courier.
  • Converting product weight from an international listing into a familiar unit.
  • Working through science or cooking coursework that mixes unit systems.

Good to know

Note the distinction between mass units (kilograms, grams) and units sometimes used loosely for weight in casual conversation — for everyday purposes like body weight or grocery shopping, the standard kg-to-lb and g-to-oz conversions used here are exactly what you need, with no adjustment required.

Weight and mass conversions come up constantly in cooking, where American recipes often use cups and ounces while much of the rest of the world measures ingredients by weight in grams — a distinction that matters for baking specifically, where precise ingredient ratios affect the outcome far more than in most other cooking.

Frequently asked questions

This tool uses the standard factor of 1 pound = 0.453592 kilograms, the internationally agreed conversion rate.