🪐 Solar System Size Comparator

See the planets side by side to true relative scale, compare them by distance, day length, gravity or moons — and find out what you'd weigh on each. All the figures are built in; nothing is fetched or sent.

Your weight on Earth (kg):

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Scale comparison

The Sun — for scale

Radius ≈ 695,700 km — about 109 Earths across. It holds 99.86% of the Solar System's mass. If the Sun were the size of a football, Earth would be a peppercorn about 30 m away.

Figures: radii, distances and rotation periods are well-established; “average” temperatures are approximations; moon counts are the latest published totals and change as new moons are confirmed (Saturn leapt from 146 to 274 in 2025). Diameters and distances are to scale relative to each other, not to the visible page break.