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Distance Calculator

Convert between distance units, or calculate GPS distance between two coordinates.

Converted Value

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Free Distance Calculator — Unit Conversion & Real GPS Distance

Whether you need to convert a measurement between units or find the actual distance between two locations on Earth, our free Distance Calculator handles both in one tool — instant unit conversion between km, miles, meters, and feet, plus accurate great-circle distance between GPS coordinates.

Why Use This Tool

  • Two modes in one: Unit conversion and GPS coordinate distance together.
  • Accurate Haversine formula: Correctly accounts for Earth's curvature.
  • Live conversion: Unit results update instantly as you type.
  • Quick swap: Reverse GPS points with one click.

Key Features

8 Unit Options

km, m, cm, mm, mile, yard, ft, in.

GPS Distance Mode

Great-circle distance between coordinates.

Step-by-Step: How to Use

Step 1: Choose Unit Conversion or GPS Coordinates mode.

Step 2: For unit conversion, enter your value and select units. For GPS mode, enter both points' latitude/longitude.

Step 3: View your converted value or calculated distance instantly.

Benefits

  • Combines two commonly needed distance tools in one place.
  • Removes manual conversion factor lookups.
  • Provides accurate straight-line distance for travel or planning estimates.

Common Use Cases

  • Converting distances between metric and imperial units for travel or shopping.
  • Estimating straight-line distance between two GPS waypoints.
  • Checking distances for hiking, sailing, or aviation planning.
  • Quick reference conversions for construction or DIY projects.

Privacy & Security

Switch between unit conversion (km, miles, meters, feet, etc.) and GPS coordinate distance (using the Haversine formula for great-circle distance between two points on Earth). All calculations happen locally in your browser.

Frequently Asked Questions

How accurate is the GPS distance calculation? +
The Haversine formula gives highly accurate straight-line distance, not driving distance.
Yes, use Unit Conversion mode — results update live as you type.
km, m, cm, mm, mile, yard, ft, and in.
A formula calculating shortest distance between two points on a sphere, accounting for Earth's curvature.
No, only straight-line great-circle distance.
Yes, use the swap button to reverse Point A and Point B.
Yes, completely free with no limits.
No, all calculations happen locally in your browser.
Yes, saved locally in your browser and shown in the sidebar.
Yes, for a quick straight-line distance estimate.

Related Tools

Also try our Compass Bearing Calculator and GPS Coordinate Converter.

Ready to calculate? Enter your values above — free and instant.

Share Your Experience

Found this tool useful? Have a suggestion or found a bug? Send your feedback directly to us — we read every message.