Bowling ball (Ten-pin)
21.83 cm (8.594 in)
Maximum diameter
A ten-pin bowling ball with its three finger holes. Up to 21.8 cm (8.595 in) across.
Published
How big is that?
21.83 cm is 2.6 times a credit card and 74% of an A4 sheet.
Bowling ball is the 15th smallest of the 39 Classic objects, and the 15th smallest of the 109 objects across all three SizeItUp games.
Closest in size from the other games: Archaeopteryx (Prehistoric Giants), 50 cm long.
Size comparison
To scale, smallest to largest: Bowling ball in orange beside the Classic objects nearest in size, in teal.
| Object | Size | vs Bowling ball |
|---|---|---|
| Golf holeThe cup on a putting green, seen from above with the flagstick in the middle. | 10.8 cm across | 49% of the size |
| US dollar billA one-dollar note, measured along its long side. Every current US note is the same size. | 15.6 cm | 71% of the size |
| Bowling ball (Ten-pin) | 21.83 cm across | – |
| Football (Size 5)The ball used in adult association football. | 21.96 cm across | about the same |
| Basketball (Size 7)The ball used in men's professional basketball. | 24.19 cm across | 1.1× bigger |
In other units
| Millimetres | 218.3 |
|---|---|
| Centimetres | 21.83 |
| Metres | 0.2183 |
| Inches | 8.594 |
| Feet | 0.7162 |
How it's measured
Maximum diameter. USBC equipment specifications, upper limit of 8.500-8.595 in.
This is the largest size the rules allow.
Sources
- images.bowl.com: USBC Equipment Specifications manual (03/26): not less than 8.500 in nor more than 8.595 in in diameter.
Checked against the source on .
Could you have guessed it by eye?
Bowling ball is one of the objects in Classic, a daily size comparison game: you stretch a shape to the size you think is right beside one you know.