Space · #8 biggest of 1,014
How big is the Solar System?
29 billion km
The Solar System measures 29 billion km. That's about 20,823 Suns lined up end to end.
By the numbers
- That's 29 billion km, or about 18 billion miles.
- It's about 17.1 trillion times taller than an average adult (1.7 m).
- Roughly 20,823 Suns could line up across it.
- Walking nonstop, you'd need about 240 million days to travel its length.
- Out of all 1,014 things in this collection, it ranks #8 by size.
Size comparison
How Solar System stacks up against things of a similar size. Tap any bar to explore it.
Milky Way galaxy
950,000,000,000,000,000 km
Orion Nebula
230,000,000,000,000 km
Crab Nebula
100,000,000,000,000 km
Oort Cloud
15,000,000,000,000 km
Solar System
29,000,000,000 km
UY Scuti (star)
2,400,000,000 km
VY Canis Majoris
1,400,000,000 km
Betelgeuse (star)
1,200,000,000 km
Antares (star)
1,200,000,000 km
Bars use a logarithmic scale so everything fits — real differences are even more extreme!
Fun fact
Standing beside it, an average person (1.7 m tall) would reach only about less than 0.001% of its height.
More in Space
Tip: swipe, use the arrow keys, or scroll past the edge to jump between sizes.