DataToolsLab
Geo & Location Tools

Coordinate Midpoint Calculator

Find the spherical midpoint between two coordinates along the great-circle path.

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What is Midpoint?

Averaging coordinates fails near the poles and the antimeridian. The spherical midpoint lies halfway along the great circle connecting the two points.

How it works

We convert to radians, project the second point onto the first's meridian plane (Bx, By), then solve for the halfway angle with atan2 and convert back to degrees.

  1. Enter your input. Type or paste your input into the field above — the tool responds instantly.
  2. Review the result. Output updates live as you type. Everything runs entirely in your browser.
  3. Copy or download. Use the Copy button to grab the result, or Download to save it as a file.

Examples

Realistic sample

Type or paste any realistic input — the tool computes the result locally and instantly.

Common mistakes

Expecting a server round-trip

Nothing is uploaded — every tool in this category runs entirely in your browser.

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