Kilometers to Nautical Miles Converter

Convert kilometers to nautical miles (and back) using the exact ratio of 1 NM = 1.852 km, with a reference table of common distances.

Distance Converter

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Formula: 1 nautical mile = 1.852 km (exact, per International Hydrographic Organization)

Common Distance Reference

Distance / Route km NM

Click any row to load that distance into the converter.

Summary

Convert kilometers to nautical miles (and back) using the exact ratio of 1 NM = 1.852 km, with a reference table of common distances.

How it works

  1. Type a distance in the kilometers field to convert to nautical miles.
  2. Or type in the nautical miles field to convert back to kilometers.
  3. The result updates instantly as you type.
  4. Click "Swap" to flip the input and output fields.
  5. Scroll down to the reference table for common distance benchmarks.

Use cases

  • Pilots and sailors converting flight or voyage distances.
  • Students converting units for geography or navigation exams.
  • Checking chart distances in nautical miles against road distances in kilometers.
  • Planning ocean crossings or coastal passages.
  • Verifying METAR/TAF visibility figures against kilometer equivalents.
  • Converting GPS track logs between metric and nautical units.

Frequently Asked Questions

Last updated: 2026-06-10 · Reviewed by Nham Vu