Mass and weight converter

Convert metric and imperial mass units with a practical tool for recipes, shipping, workshop notes and product data.

Result Enter a value to convert.
Examples

How it is calculated

Each value is converted to grams first, then from grams to the target unit. Pound and ounce factors use the international avoirdupois definitions.

Common uses

  • Convert recipe quantities between grams, kilograms, ounces and pounds.
  • Compare product weights for shipping, packaging and inventory.
  • Translate technical notes between metric and imperial mass units.

Quick notes

Is weight the same as mass?

In everyday use the words are often mixed. This tool converts mass units commonly used as weight labels.

Which pound definition is used?

It uses the international avoirdupois pound: 1 lb equals exactly 453.59237 grams.