Sizes / Everyday things

How big is a credit card?

8.6 cm wide · 3.4 in

ISO standard: 85.6 millimeters wide.

Paperclip 3.3 cm

Credit card 8.6 cm

Credit card next to paperclip, drawn to scale.

Compared with things you know

A credit card is about 12× the length of a grain of rice Grain of rice: 7 mm
A credit card is about 2.6× the length of a paperclip Paperclip: 3.3 cm
A credit card is about 1.4× the length of a house key House key: 6 cm
A credit card is about 1/1.8 the height of a Smartphone Smartphone: 15 cm

Think you could size it by eye? A credit card is one of the objects in Sizedle.

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