Paper Size Chart

Every ISO 216 size (43 in total) plus the North American and photo formats, with millimetres, inches and the pixel dimensions at 300dpi. The pixel column is what you need when a submission form asks for an image size in pixels rather than in paper terms.

A series

The everyday office series. A4 is the default for printing, copying and submissions; each step down halves the area.

Size Millimetres Inches 300 dpi

A0 841 × 1189 33.1 × 46.8 9934 × 14044

A1 594 × 841 23.4 × 33.1 7016 × 9934

A2 420 × 594 16.5 × 23.4 4961 × 7016

A3 297 × 420 11.7 × 16.5 3508 × 4961

A4 210 × 297 8.27 × 11.7 2481 × 3508

A5 148 × 210 5.83 × 8.27 1749 × 2481

A6 105 × 148 4.13 × 5.83 1241 × 1749

A7 74 × 105 2.91 × 4.13 875 × 1241

A8 52 × 74 2.05 × 2.91 615 × 875

A9 37 × 52 1.46 × 2.05 438 × 615

A10 26 × 37 1.02 × 1.46 308 × 438

B series

The geometric mean of the matching A size and the next one up, so slightly larger. Common for posters, books and envelope liners.

Size Millimetres Inches 300 dpi

B0 1000 × 1414 39.4 × 55.7 11812 × 16701

B1 707 × 1000 27.8 × 39.4 8351 × 11812

B2 500 × 707 19.7 × 27.8 5906 × 8351

B3 353 × 500 13.9 × 19.7 4170 × 5906

B4 250 × 353 9.84 × 13.9 2953 × 4170

B5 176 × 250 6.93 × 9.84 2079 × 2953

B6 125 × 176 4.92 × 6.93 1477 × 2079

B7 88 × 125 3.46 × 4.92 1040 × 1477

B8 62 × 88 2.44 × 3.46 733 × 1040

B9 44 × 62 1.73 × 2.44 520 × 733

B10 31 × 44 1.22 × 1.73 367 × 520

C series

Envelope sizes. C4 holds an unfolded A4, C5 holds an A5 (A4 folded once), C6 holds an A4 folded in three.

Size Millimetres Inches 300 dpi

C0 917 × 1297 36.1 × 51.1 10831 × 15319

C1 648 × 917 25.5 × 36.1 7654 × 10831

C2 458 × 648 18.0 × 25.5 5410 × 7654

C3 324 × 458 12.8 × 18.0 3827 × 5410

C4 229 × 324 9.02 × 12.8 2705 × 3827

C5 162 × 229 6.38 × 9.02 1914 × 2705

C6 114 × 162 4.49 × 6.38 1347 × 1914

C7 81 × 114 3.19 × 4.49 957 × 1347

C8 57 × 81 2.24 × 3.19 674 × 957

C9 40 × 57 1.57 × 2.24 473 × 674

C10 28 × 40 1.10 × 1.57 331 × 473

North America

Used in the US, Canada and a few others; not compatible with the ISO sizes. Names differ by country, so confirm before printing across borders.

Size Millimetres Inches 300 dpi

Letter 216 × 279 8.50 × 11.0 2552 × 3296

Legal 216 × 356 8.50 × 14.0 2552 × 4205

Tabloid 279 × 432 11.0 × 17.0 3296 × 5103

Ledger 432 × 279 17.0 × 11.0 5103 × 3296

Executive 184 × 267 7.24 × 10.5 2174 × 3154

Half Letter 140 × 216 5.51 × 8.50 1654 × 2552

Photo paper

Measured in inches; the higher the number, the larger the print. 4R is the usual size for home photo printing.

Size Millimetres Inches 300 dpi

4R 102 × 152 4.02 × 5.98 1205 × 1796

5R 127 × 178 5.00 × 7.01 1500 × 2103

6R 152 × 203 5.98 × 7.99 1796 × 2398

8R 203 × 254 7.99 × 10.0 2398 × 3000

About Paper Size Chart

From A0 down to A10, the B series, C-series envelopes, plus North American Letter and Legal and photo paper — with millimetres, inches and pixel dimensions at 300dpi.

The A series has a neat rule: each size is the previous one folded along its long edge, so one A4 folds into an A5, and two A4 sheets side by side make an A3. A0 is defined as one square metre with a fixed 1:√2 ratio — the trick being that folding never changes the shape.

Submission forms, print shops and ID photos usually ask for pixels rather than paper sizes. 300dpi is the usual print resolution and that is what the pixel column uses; for 72dpi or 150dpi, scale proportionally.

The North American system is not compatible with ISO. Letter is about 6mm wider and 18mm shorter than A4, so printing an A4 layout on Letter paper cuts off a strip at the bottom.