US quarter
24.26 mm (0.9551 in)
Diameter
The 25-cent coin of the United States. Diameter: 24.26 mm.
Published
How big is that?
24.26 mm is 28% of a credit card.
US quarter is the 4th smallest of the 39 Classic objects, and the 4th smallest of the 109 objects across all three SizeItUp games.
Size comparison
To scale, smallest to largest: US quarter in orange beside the Classic objects nearest in size, in teal.
| Object | Size | vs US quarter |
|---|---|---|
| Penny (US one cent)The copper-coloured US cent. Now struck only for collector sets. | 19.05 mm across | 79% of the size |
| Nickel (US five cents)The US five-cent coin. | 21.21 mm across | 87% of the size |
| US quarter | 24.26 mm across | – |
| LEGO brick (2 x 4)The classic eight-stud building brick. | 31.8 mm long | 1.3× bigger |
| Table tennis ballA regulation ping-pong ball. | 40 mm across | 1.6× bigger |
In other units
| Millimetres | 24.26 |
|---|---|
| Centimetres | 2.426 |
| Metres | 0.02426 |
| Inches | 0.9551 |
| Feet | 0.07959 |
How it's measured
Diameter. Set by US law.
Sources
- law.cornell.edu: 31 U.S.C. 5112(a)(3): a quarter dollar coin that is 0.955 inch in diameter (24.26 mm).
- usmint.gov (supporting): US Mint coin specifications: diameter 0.955 in, 24.26 mm.
Checked against the source on .
Could you have guessed it by eye?
US quarter 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.