17 units · base: m
Convert lengths: mm, cm, m, km, inch, foot, mile, nautical mile…
Equivalences of 1 mètre (m) in all available length units.
The most searched length conversions in everyday use.
Type the value to convert in the "Value" field of the length converter.
Select the source unit ("From") and the target unit ("To") from the 17 available units.
The result appears instantly, calculated according to International System of Units (SI) standards.
Convert length values for classes, lab work, or scientific reports with SI-compliant precision.
Handle length units from different systems (metric, imperial) in your professional projects.
Quickly understand length values shown on foreign products, recipes, or instruction manuals.
Complete guide: uses, benefits, privacy, and additional tools.
Convert lengths: mm, cm, m, km, inch, foot, mile, nautical mile… This category includes 17 units, with Mètre (m) 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 17 units: Nanomètre (nm), Micromètre (µm), Millimètre (mm), Centimètre (cm), Décimètre (dm), Mètre (m), Kilomètre (km), Pouce (in)…. All are accessible via the converter selector.
Convertly UNITS covers 14 unit categories: length, mass, temperature, speed, volume, area, and more. Also try mass / temperature.
14 unit categories based on the International System of Units (SI): length, mass, temperature, energy, and more.
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