Calculators

Mass & Weight Converter

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Convert kilograms, pounds, ounces, stones, grams, and metric tons.

Choose units, enter a value, and click Calculate. Use Swap to reverse units before calculating.

Result

Note: Results use standard conversion factors for everyday and educational use. Verify critical measurements with official references.

Use the Mass & Weight Converter to convert between many units. Choose from and to units, enter a value, and click Calculate.

How to use the Mass & Weight Converter

  1. Select the unit you are converting from and the unit you are converting to.
  2. Enter your value.
  3. Click Calculate for the converted result and summary.
  4. Use Swap units to reverse direction.

Read our conversion guide for formulas, charts, and links to dedicated pair converters.

For mixed categories, use the Conversion Calculator.

Features

  • Full dropdown lists with standard and specialty units
  • Calculate-on-demand results with summary panel
  • Free — no sign-up required

Common questions

Quick answers before you start calculating.

The dropdown lists include every unit from the reference conversion suite for this category, using standard conversion factors.