Screen Specs · Guide

Paper sizes in pixels at 300 DPI: A4, A3, Letter, business cards and more

Tested with Screen Specs: Sizes & DPI 1.0.1 · listing checked September 29, 2026 · iPhone, iOS 15 or later

Short answer

At 300 DPI, A4 is 2480 × 3508 pixels, A3 is 3508 × 4961, A5 is 1748 × 2480, US Letter is 2550 × 3300 and a US business card is 1050 × 600. The formula is millimetres ÷ 25.4 × 300 (or inches × 300). All 21 print presets from Screen Specs are below with their physical sizes; for another DPI, scale linearly (A4 at 150 DPI is 1240 × 1754).

ISO A series

Each size is half the previous one, so pixel dimensions halve along the long edge as you go down the series.

Name	Pixels at 300 DPI	Aspect	Physical size and notes
A0 Paper	9933 × 14043	1:1.41	841 x 1189 mm. Pixel size shown at 300 DPI (press quality).
A1 Paper	7016 × 9933	1:1.42	594 x 841 mm. Pixel size shown at 300 DPI (press quality).
A2 Paper	4961 × 7016	1:1.41	420 x 594 mm. Pixel size shown at 300 DPI (press quality).
A3 Paper	3508 × 4961	1:1.41	297 x 420 mm. Pixel size shown at 300 DPI (press quality).
A4 Paper	2480 × 3508	1:1.41	210 x 297 mm. Pixel size shown at 300 DPI (press quality).
A5 Paper	1748 × 2480	1:1.42	148 x 210 mm. Pixel size shown at 300 DPI (press quality).
A6 Paper	1240 × 1748	1:1.41	105 x 148 mm. Pixel size shown at 300 DPI (press quality).
A7 Paper	874 × 1240	1:1.42	74 x 105 mm. Pixel size shown at 300 DPI (press quality).
A8 Paper	614 × 874	1:1.42	52 x 74 mm. Pixel size shown at 300 DPI (press quality).

ISO B series

Name	Pixels at 300 DPI	Aspect	Physical size and notes
B0 Paper	11811 × 16701	1:1.41	1000 x 1414 mm. Pixel size shown at 300 DPI (press quality).
B1 Paper	8350 × 11811	1:1.41	707 x 1000 mm. Pixel size shown at 300 DPI (press quality).
B2 Paper	5906 × 8350	1:1.41	500 x 707 mm. Pixel size shown at 300 DPI (press quality).
B3 Paper	4169 × 5906	1:1.42	353 x 500 mm. Pixel size shown at 300 DPI (press quality).
B4 Paper	2953 × 4169	1:1.41	250 x 353 mm. Pixel size shown at 300 DPI (press quality).
B5 Paper	2079 × 2953	1:1.42	176 x 250 mm. Pixel size shown at 300 DPI (press quality).

US paper sizes

Name	Pixels at 300 DPI	Aspect	Physical size and notes
Letter	2550 × 3300	17:22	8.5 x 11.0 in. Pixel size shown at 300 DPI (press quality).
Legal	2550 × 4200	17:28	8.5 x 14.0 in. Pixel size shown at 300 DPI (press quality).
Tabloid	3300 × 5100	11:17	11.0 x 17.0 in. Pixel size shown at 300 DPI (press quality).
Executive	2175 × 3150	1:1.45	7.25 x 10.5 in. Pixel size shown at 300 DPI (press quality).

Business cards

Add 3 mm bleed on each side for print; the sizes here are trim size.

Name	Pixels at 300 DPI	Aspect	Physical size and notes
Business Card (US Standard)	1050 × 600	7:4	3.5 x 2.0 in. Pixel size shown at 300 DPI (press quality). Add 3 mm bleed on every edge before sending to print.
Business Card (International ISO)	1004 × 650	1.54:1	85 x 55 mm. Pixel size shown at 300 DPI (press quality). Add 3 mm bleed on every edge before sending to print.

Why 300 DPI, and how to convert

300 dots per inch is the common press-quality target; 150 DPI is acceptable for large-format work viewed from a distance, and screens are described in PPI instead (see the PPI calculator). To convert any size: pixels = inches × DPI, or millimetres ÷ 25.4 × DPI. Rounding to whole pixels is why A-series values differ by one pixel from some other tables.

What this cannot do

Values are the catalog bundled in Screen Specs; Apple's own tech specs and Human Interface Guidelines are the primary source and win if they ever disagree.
Screen Specs is iPhone only (iOS 15 or later); this page is the web view of one part of its catalog.
Trim sizes without bleed; add bleed per your printer's spec.
Rounded to whole pixels; other sources may differ by ±1 px.

Questions people ask

What is A4 size in pixels?

2480 × 3508 pixels at 300 DPI (210 × 297 mm). At 150 DPI it is 1240 × 1754, and at 72 DPI 595 × 842.