Weight & Mass Converter
High-precision mass and weight conversions between International Avoirdupois and SI units. Instantly calculate values across kilograms, grams, pounds, ounces, and metric tons.
Supported Weight & Mass Units & Standards
Detailed definitions, unit symbols, and measurement systems for this category.
| Unit Name | Symbol | System | Description |
|---|---|---|---|
| Kilogram (Kilograms) | kg | metric | The fundamental SI unit of mass. |
| Gram (Grams) | g | metric | Metric unit equal to 1/1,000 of a kilogram. |
| Milligram (Milligrams) | mg | metric | Metric unit equal to 1/1,000,000 of a kilogram, used in chemistry and pharmacology. |
| Pound (Pounds) | lb | imperial | Standard imperial mass unit equal to 16 ounces (0.45359237 kg). |
| Ounce (Ounces) | oz | imperial | Equal to 1/16 of an avoirdupois pound (approx. 28.35 grams). |
| Stone (Stones) | st | imperial | British imperial unit equal to 14 pounds (approx. 6.35 kg). |
| Metric Ton (Metric Tons) | t | metric | Equal to 1,000 kilograms (approx. 2,204.62 pounds). |
Popular Weight & Mass Conversion Pairs
Browse dedicated conversion pages complete with snippet tables and formula explanations.
Weight & Mass FAQ
Common questions about converting weight & mass units.
What units are supported in the Weight & Mass converter?
Unitly supports 7 distinct weight & mass units: Kilogram (kg), Gram (g), Milligram (mg), Pound (lb), Ounce (oz), Stone (st), Metric Ton (t).
How does Unitly ensure accurate weight & mass calculations?
All calculations are executed client-side using NIST-calibrated constants and IEEE-754 precision filters to eliminate floating-point artifacts.
Can I convert backwards or swap units?
Yes! Click the quick-swap button (⇄) or simply edit either the "From" or "To" field directly for instant bidirectional calculation.