Unit Converters

Weight Converter

Convert common mass values among metric units, ounces, pounds, stone, and US short tons. The interface retains the legacy weight wording while using mass conversion factors.

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What Weight and Mass Converter does

Weight and Mass Converter converts a numeric mass between the explicitly labeled units in the selector. Changing the value or either unit recalculates the result immediately.

Values normalize through kilograms, using exact defined factors such as 0.45359237 kilogram per avoirdupois pound and 907.18474 kilograms per US short ton. This is a unit conversion, not a measurement or lookup: the result is determined only by the number and units supplied in the browser.

How to use Weight and Mass Converter

  1. Enter a finite numeric mass value.
  2. Choose the source unit and the unit required for the result.
  3. Read the converted value with its destination symbol, or use Swap units to reverse the direction.
  4. Carry only the precision justified by the original measurement when copying the result.

Important details

Supported units

Supported units are milligram, gram, kilogram, metric tonne, ounce, pound, stone, and US short ton. Long tons and troy measures are not included.

A distinction that matters

Everyday language often says weight, but this table converts mass units. It does not turn mass into gravitational force or account for a different local gravitational field.

Practical uses

  • Translate body or package mass between kilograms and pounds.
  • Compare ingredient or laboratory quantities in grams and ounces.
  • Convert freight figures among metric tonnes and US short tons.

Privacy and limitations

Weight and Mass Converter performs its arithmetic locally. PagesTools does not receive the entered value or selected units.

The table uses avoirdupois ounces and pounds, not troy units, and includes US short ton rather than imperial long ton. It does not calculate force, shipping charges, density, or scale uncertainty.

Common questions

Frequently asked questions

Which ounce and pound does this converter use?

It uses ordinary avoirdupois mass units: one ounce is 0.028349523125 kilogram and one pound is exactly 0.45359237 kilogram. Troy measures are not included.

Is the ton option metric or US customary?

Both metric tonne and US short ton are separate choices. The metric tonne is 1,000 kilograms; the US short ton is 907.18474 kilograms.

Does Weight Converter account for gravity?

No. The factors convert mass units. Calculating weight as force requires gravitational acceleration and a force unit such as newtons.