13 units · base: kg
Convert masses: mg, g, kg, tonne, ounce, pound…
Equivalences of 1 kilogramme (kg) in all available mass units.
The most searched mass conversions in everyday use.
Type the value to convert in the "Value" field of the mass converter.
Select the source unit ("From") and the target unit ("To") from the 13 available units.
The result appears instantly, calculated according to International System of Units (SI) standards.
Convert mass values for classes, lab work, or scientific reports with SI-compliant precision.
Handle mass units from different systems (metric, imperial) in your professional projects.
Quickly understand mass values shown on foreign products, recipes, or instruction manuals.
Complete guide: uses, benefits, privacy, and additional tools.
Convert masses: mg, g, kg, tonne, ounce, pound… This category includes 13 units, with Kilogramme (kg) as the reference unit. Calculations are performed directly in your browser, in full privacy and without any installation.
All conversions are based on the official factors of the International System of Units (SI) and ISO standards. No intermediate rounding is applied to preserve precision. Calculations are performed directly in your browser, in full privacy and without any installation.
Unlike other online tools, Convertly UNITS is 100% free. No sign-up, no email required. Convert as many values as you need, with no quotas or limitations. Calculations are performed directly in your browser, in full privacy and without any installation.
The values you enter never leave your device. All calculations run locally in the browser — no data is transmitted or stored. See our privacy policy.
This converter supports 13 units: Milligramme (mg), Gramme (g), Kilogramme (kg), Tonne (t), Once (oz), Livre (lb), Stone (st), Tonne courte (US) (sh tn)…. All are accessible via the converter selector.
Convertly UNITS covers 14 unit categories: length, mass, temperature, speed, volume, area, and more. Also try length / temperature.
14 unit categories based on the International System of Units (SI): length, mass, temperature, energy, and more.
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