MASS UNIT WORKSPACE

Weight Converter

Convert common body, laboratory, trade, and shipping mass units with metric and customary values side by side.

Reviewed reference factorsValues stay in this browser tabNon-negative mass values; this does not convert force or calculate shipping charges.

Conversion input

Convert a mass value for practical use

Enter the recorded amount and choose its unit. The workspace uses kilograms as the shared base and labels every output explicitly.

Find a unit6 / 6

Filter by unit name, symbol, or code. Your current selections remain available.

Known value0 / 80

Enter the mass as a plain number. Choose micrograms, milligrams, grams, kilograms, carats, ounces, pounds, stone, or tonnes as appropriate.

Convert from

Choose the unit attached to the value you entered.

Convert to

Choose the unit required for your report, estimate, or comparison.

Displayed precision

Choose the maximum decimal places shown. This does not increase source accuracy.

Conversion runs locally after the active reference catalogue loads.

Conversion result

Your checked conversion appears here

Enter a mass to compare the selected unit with every available metric and customary equivalent.

What this tool delivers

Practical weight labels, mass-based arithmetic

Everyday interfaces often say weight; the calculation converts mass units and does not model local gravity.

What it converts

Converts mass among reviewed metric, jewellery, body-weight, and shipping units available in the database catalogue.

What you provide

One non-negative mass, the recorded source unit, the required output unit, and suitable result precision.

What you receive

A highlighted mass conversion, the kilogram path, equivalent units, and a CSV suitable for independent checking.

Calculation method

How the mass conversion is calculated

The source amount is multiplied by its kilogram factor. That kilogram value is divided by the selected destination factor. The tool does not apply gravitational acceleration.

Review the NIST mass conversion factors

Quick answers