Scale Explorer

Everyday objects

How big is a credit card?

Credit card · ISO/IEC 7810 ID-1 card format

Width
85.6 mm 3.37 in
Height
53.98 mm 2.125 in
Thickness
0.76 mm 0.0299 in
Show
US penny, Golf ball, Credit card, Human drawn to the same scaleUS penny: diameter 19.05 mm. Golf ball: diameter at least 4.27 cm. Credit card: width 85.6 mm. Human: height 1.61–1.75 m.US penny: 19.05 mmGolf ball: at least 4.27 cmCredit card: 85.6 mmHuman: 1.61–1.75 mHuman1.61–1.75 mCredit card85.6 mmGolf ballat least 4.27 cmUS penny19.05 mm
Everything is drawn to the same scale, standing on the same ground line. Silhouettes are simplified outlines scaled to the measured dimension. A faded outline shows the top of a size range.

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Dimensions

MeasurementMetricImperialNotesSource
Width 85.6 mm 3.37 in Nominal ID-1 width, stated as 85,60 mm (3.370 in) [1]
Height 53.98 mm 2.125 in Nominal ID-1 height (2.125 in) [1]
Thickness 0.76 mm 0.0299 in Nominal ID-1 thickness (0.030 in) [1]

About the credit card

Payment cards use the ID-1 size, one of four card sizes defined in the international standard ISO/IEC 7810 for identification cards. An ID-1 card is nominally 85.60 mm wide, 53.98 mm high and 0.76 mm thick. The same standard also defines larger ID-2 and ID-3 sizes for other documents.

  • ISO/IEC 7813, the standard for financial transaction cards, is tested against ID-1 cards. [2]
  • The larger ID-2 and ID-3 sizes are nominally 105.00 x 74.00 mm and 125.00 x 88.00 mm, with the same 0.76 mm thickness. [1]

How many fit?

  • ≈ 20 × Credit card · width lined up end to end match the Human · height
  • ≈ 1.7 × AA battery · overall height lined up end to end match the Credit card · width

Counts divide one sourced figure by another. "End to end" uses each object's main measurement; weight and volume rows appear only when both figures are sourced.

How it compares

  • 1.7× A credit card is about 1.7 times as wide as an AA battery is tall. See side by side
  • 1/2.7 A baseball is about 2.7 times as around as a credit card is wide. See side by side
  • 1/1.4 A soda can is about 1.4 times as tall as a credit card is wide. See side by side
  • 1/2.2 A pencil is about 2.2 times as long as a credit card is wide. See side by side
  • 1/3.5 A sheet of A4 paper is about 3.5 times as tall as a credit card is wide. See side by side
  • 1/20 An average adult is about 20 times as tall as a credit card is wide. See side by side

Factors compare the width of a credit card with each object’s own main measurement (height for a human). Where a size varies, the factor is given as a range.

Notes on these figures

  • Values are the nominal ID-1 dimensions; the standard allows small tolerances, which are not listed here, and notes its SI and imperial values are rounded separately.
  • No official source giving the mass of a card was found, so mass is left out.

Sources

  1. ISO/IEC (preview via iTeh Standards), ISO/IEC 7810:2019 Identification cards - Physical characteristics, clause 3.5. Accessed 25 September 2026.
  2. International Organization for Standardization, ISO/IEC 7813:2006 Information technology - Identification cards - Financial transaction cards (abstract). Accessed 25 September 2026.

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