Mercator
—
Conformal
Move over the map to see local distortion.
lon —, lat —
Projection
Mercator
Stereographic
Orthographic
Mollweide
Viewpoint rotation
Longitude λ₀
0°
Latitude φ₀
0°
Auto-rotate (ortho/stereo)
Graticule spacing
30°
15°
10°
Mercator
— conformal cylindrical. x = λ, y = ln(tan(π/4 + φ/2)). Angles are true everywhere; area inflates toward the poles.