This interactive Earth–Mars distance scale model shows Earth (left) and Mars (right) at true relative size, and the range of their distance. Adjust Mars’s diameter in pixels; Earth scales automatically.

DistanceToSun.com

Interactive scale models that let you explore real astronomical distances and object sizes.

Earth
Mars

Earth–Mars scale model

Adjust the Mars’s diameter (in pixels). The other body size and the distance update live using real ratios. Drag to pan, or scroll to move around.

Tip: Large Mars sizes make the bodies and distance enormous — use the jump buttons.

km miles
Sun–Earth Earth–Moon Earth–Mercury Earth–Venus Earth–Mars Earth–Pluto Jupiter–Earth Saturn–Earth Uranus–Earth Neptune–Earth About

Scale numbers
Safe Mode: For extreme distances when browsers break Off