ToolWren › Length

Length Converter

Convert any length or distance between metric and imperial units. Type a value, pick the units, and every other unit updates instantly.

100% client-side · nothing is uploaded

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How to use the Length

Enter the number you want to convert in the Value field.
Pick the unit you're converting From and the unit you want To.
Read the converted result, or use ⇅ to swap the two units.
Check the All units table to see your value expressed in every supported unit at once.

Privacy: this tool runs entirely in your browser. Your input is never sent to, received by, or stored on any server — there are no uploads and no tracking of what you enter.

About Length

Metric and imperial length

Metric (meters, centimeters, kilometers) and imperial/US units (inches, feet, yards, miles) describe the same distances with different bases. This converter holds the exact ratios so results are precise.

How conversion works

Every unit is defined relative to the meter — 1 inch is exactly 0.0254 m and 1 mile is 1609.344 m. Your value is converted to meters internally, then to the target unit.

Common conversions

1 meter is about 3.28 feet, 1 mile is about 1.609 km, 1 inch is 2.54 cm. The All units table shows your value in every unit at once.

Frequently asked questions

Is the conversion exact?

Yes, it uses internationally defined exact ratios, rounded only for display.

Does it handle nautical miles?

Yes, 1 nautical mile = 1852 m is included.

Is my data uploaded?

No, everything runs in your browser.