About
How map projections affect apparent size
Converting a spherical Earth into a flat map requires a projection, and every flat map projection makes tradeoffs. Mercator preserves local angles for navigation, while making areas nearer the poles appear larger than they are on the globe.
Read a visual comparison with area data
A map view alone is not an area measurement. Move country outlines to understand how map placement changes apparent size, then use the stated area basis when you need a numeric comparison.
Use the map and data for different questions
Map view
Shows how projection and latitude affect apparent size.
Area data
Shows the stated area basis used for a numeric comparison.
The visual difference generally grows farther from the equator. Read how the site labels area, country, and continent data in the methodology and sources.
How to Use This Tool
- Drag country outlines to explore how projection changes apparent size
- Use the compass to rotate countries for better comparison angles
- Read the stated area basis before treating a visual overlay as a numeric comparison
- Use a comparison page to review its sources and related examples
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