OceanCalc

Latitude Degrees to Nautical Miles — Kilometers

Convert degrees of latitude (or longitude at the equator) to nautical miles along a meridian.

Last updated: March 28, 2026

Author: OceanCalc Editorial Team · Publisher: Albor Digital LLC

Page focus

Use this view when you need kilometer-focused results from the Latitude Degrees to Nautical Miles. Enter your values above; results stay synchronized with the full tool.

Latitude Degrees to Nautical Miles

Result

Nautical miles

60

Formula

1° latitude = 60 nm (meridian arc)

Overview

Use the Latitude Degrees to Nautical Miles for fast, reliable maritime math—built on standard nautical relationships with straightforward inputs.

How to use

Start by filling in the fields for the Latitude Degrees to Nautical Miles; the page recalculates as you type so you can iterate through options in one place.

Formula

The relationship behind this tool is: 1° latitude = 60 nm (meridian arc)

One degree of latitude equals 60 nautical miles by definition (one minute = one nm).

Longitude distance varies with cos(latitude); this tool is for latitude or equator longitude.

Practical use cases

Typical uses for the Latitude Degrees to Nautical Miles include passage planning, briefing crew, converting instrument readouts to chart units, and double-checking mental math when fatigue or weather make errors more likely.

Tips for accuracy

  • Confirm that the units you enter match your chart, GPS, or instrument readout before relying on the Latitude Degrees to Nautical Miles.
  • In rough weather or poor visibility, cross-check important results with a second method or a crew member.
  • Treat simplified models (wave height, radar horizon, etc.) as estimates—real conditions vary with fetch, refraction, and equipment.

Practical examples

  • 1° lat = 60 nm
  • 0.5° = 30 nm

Frequently Asked Questions

  • Does this work for longitude everywhere?

    Only at the equator. Elsewhere use cos(latitude) scaling or a rhumb/great-circle tool.

  • How accurate is this calculator?

    This calculator uses standard maritime formulas and practical approximations where noted. It is suitable for planning and cross-checks; always verify safety-critical decisions with official references and local conditions.

  • Can I use this on mobile?

    Yes. OceanCalc tools are responsive and work on phones and tablets for quick checks on deck or in the cockpit.

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Results are estimates for educational purposes only and should not be used for real navigation decisions.

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