How does the Index Card 3×5 compare in size to common items?

It is taller than a credit card (85.6 mm) and taller than a passport, which helps picture its scale.

What are the exact dimensions of the Index Card 3×5?

It measures 76.2 mm wide, 127.0 mm tall, and 0.2 mm thick.

Index Card 3×5 Dimensions

Reference Papers

Official Confirmed Size

The Index Card 3×5 measures 127.0 mm tall, 76.2 mm wide, and 0.2 mm thick (5.00 in × 3.00 in × 0.01 in).

Exact Dimensions

Index Card 3×5 exact dimensions in millimeters and inches
Dimension	Metric	Imperial
Height	127.0 mm	5.00 in
Width	76.2 mm	3.00 in
Depth	0.2 mm	0.01 in

Size in Context

The Index Card 3×5 measures 76.2 mm wide, 127.0 mm tall, and 0.2 mm thick. For a quick sense of scale, that makes it taller than a standard credit card (85.6 mm).

For scale, the Index Card 3×5 is taller than a credit card (85.6 mm) and taller than a passport. Beside a 330 ml soda can it appears shorter and squatter.