The diameter of a US quarter is about 3.47 times the body length of a housefly. Selected basis: a representative value for Housefly; approximate values.
Both rulers start at the same zero and share one linear scale. Artwork keeps its original proportions.
7 mm - Body length; representative.
A housefly is a common flying insect often found near human habitation and associated with transmitting diseases.
A chosen 7 mm housefly body. Legs and wings extend beyond the measured span.
Defined examples — our methodology2.426 cm - Diameter; specified.
A US quarter is a coin worth twenty-five cents, commonly used in United States currency.
Standard copper-nickel clad US quarter: 24.26 mm diameter, 1.75 mm thickness and 5.67 g mass. Earlier silver quarters do not share this mass. The illustrated relief is representative; the circular rim is the measured span.
US Mint — circulating coin specifications
There’s always another scale
Living thingsHousefly7 mmA housefly is a common flying insect often found near human habitation and associated with transmitting diseases.
Everyday thingsUS quarter2.426 cmA US quarter is a coin worth twenty-five cents, commonly used in United States currency.
Living thingsHoneybee1.5 cmA honeybee is a social insect that lives in a colony and gathers nectar and pollen from flowers.
Living thingsSmall ant5 mmAn ant is a social insect that lives in an organised colony, usually with workers, a queen and specialised roles.
Everyday thingsUS dime1.791 cmA US dime is a ten-cent coin, the smallest denomination in US currency above the penny and nickel.
Everyday thingsUS nickel2.121 cmA US nickel is a five-cent coin made primarily of a copper-nickel alloy.
Everyday things£1 coin2.343 cmA £1 coin is a twelve-sided British coin used as standard currency in the United Kingdom.Side by side
Illustrative artwork · not to scale
Illustrative artwork · not to scale
Illustrative artwork · not to scale
Illustrative artwork · not to scaleGot a good eye for scale?