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Measurement
Weight Conversion Table
Values shown for 1 Kilogram
About Weight Conversions
Weight and mass measurements are critical in global trade, healthcare, and science. While the kilogram — redefined in 2019 using the Planck constant — serves as the SI base unit, many industries still operate with pounds, ounces, and stones. International shipping relies on accurate weight conversions for customs declarations and freight cost calculations, where discrepancies can lead to fines or delays. In pharmacy and chemistry, even milligram-level precision matters for dosage accuracy and reaction stoichiometry. Our converter handles the full range from atomic mass units (used in molecular chemistry) to metric tons (used in bulk shipping), with all factors traceable to NIST Reference on Constants.
| Unit Name | Symbol | Value | Formula |
|---|---|---|---|
| Atomic Mass Unit | u | 6.02214 × 10²⁶ | multiply by 1.66054 × 10⁻²⁷ |
| Carat | ct | 5000 | multiply by 0.0002 |
| Gram | g | 1000 | divide by 1000 |
| Kilogram | kg | 1 | base unit |
| Long Ton | long tn | 0.000984207 | multiply by 1016.0469088 |
| Metric Ton | t | 0.001 | multiply by 1000 |
| Milligram | mg | 1000000 | divide by 1,000,000 |
| Ounce | oz | 35.274 | multiply by 0.028349523125 |
| Pound | lb | 2.20462 | multiply by 0.45359237 |
| Short Ton | US ton | 0.00110231 | multiply by 907.18474 |
| Stone | st | 0.157473 | multiply by 6.35029318 |