Sol is about 1.39 million kilometres in diameter.

A table tennis ball is 40mm in diameter.

That makes the sun about 34,750,000,000 times bigger than a pingpong ball.

I find some of these numbers hard to believe sometimes. 40 mm seems really big for a table tennis ball.

It's 0.00019884 furlongs, if that helps.

Or 0.0008 OSP (Olympic Swimming Pools)

Edit to add: length, not volume

Or 0.000587613 smoots

https://en.wikipedia.org/wiki/Smoot