Length Converter — Meters, Feet & Miles

Convert length — meters, feet, inches and more

A dedicated length converter supporting 13 units including meters, kilometers, centimeters, millimeters, miles, yards, feet, inches, nautical miles, fathoms, and light years. Instant results with a full conversion reference table.

Length conversion applies internationally standardized ratios. The fundamental relationship is 1 inch = 25.4 mm exactly, from which all metric-imperial conversions derive. The converter supports 13 units from millimeters to light years, performing instant calculations with full precision in your browser.

Length conversion is needed in construction (blueprints may use different unit systems), international travel (road signs show kilometers in most countries but miles in the US and UK), athletics (track events use meters while US sports use yards), and science (converting between SI units and legacy measurements).

For quick mental conversions, remember these approximations: 1 meter is about 3 feet 3 inches, 1 mile is roughly 1.6 km, and 1 inch is about 2.5 cm. For precise work like engineering or construction, always use the exact conversion factors. When working with nautical miles, note that 1 nautical mile equals 1.852 km — it is based on one minute of latitude, not a simple metric multiple.

Smartphone calculators and Google Search handle basic length conversions, but lack reference tables and less common units like nautical miles, fathoms, and light years. This dedicated converter provides all 13 units with instant cross-referencing, making it faster than searching for individual conversion factors.