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🌌 Solar System Planet Comparator
Compare all planets to scale — by size or by distance from the Sun. Click any planet for key facts.
Class 5–8 · Science / Astronomy
Planet & Sun Size Comparison
All circles drawn to scale relative to the Sun. Click a planet for details.
Sun
1,391,400 km
Mercury
4,878 km
Venus
12,104 km
Earth
12,742 km
Mars
6,780 km
Jupiter
139,822 km
🪐
Saturn
116,464 km
Uranus
50,724 km
Neptune
49,244 km
Size relative to Earth
🪨 Mercury0.38× Earth
🌕 Venus0.95× Earth
🌍 Earth1.00× Earth
🔴 Mars0.53× Earth
🟠 Jupiter10.97× Earth
🪐 Saturn9.14× Earth
🔵 Uranus3.98× Earth
🔵 Neptune3.86× Earth
All Objects — Quick Reference
Sun
r = 695,700 km
Mercury
r = 2,439 km
Venus
r = 6,052 km
Earth
r = 6,371 km
Mars
r = 3,390 km
Jupiter
r = 69,911 km
Saturn
r = 58,232 km
Uranus
r = 25,362 km
Neptune
r = 24,622 km
💡 Mind-blowing Solar System Facts
- If the Sun were the size of a basketball, Earth would be a small marble 26 metres away.
- Jupiter is so big that all other planets in the Solar System could fit inside it with room to spare.
- Light takes 8 minutes 20 seconds to travel from the Sun to Earth, but over 4 hours to reach Neptune.
- Saturn's rings are only about 10–100 metres thick but stretch over 280,000 km wide.
- A day on Venus is longer than a year on Venus — it rotates extremely slowly.