All 141 tools / Print and prepress
Convert a paper size to mm, inches, points and pixels, and find the nearest standard sizes
Paper size converterFreeFor designers
25/day
free runs a day, no sign-in.
Before: what you give it
The example input, as typed in. You paste text, CSS, markup or notes.
size: A5 unit: mm
After: what comes back
The first lines of a real run on that input. Nothing here is edited by hand.
A5: 148 x 210 mm = 5.827 x 8.268 in = 419.5 x 595.3 pt Pixels: 420 x 595 at 72 ppi; 559 x 794 at 96; 1748 x 2480 at 300 Aspect ratio 1.419:1 (ISO, 1:1.414); area 310.8 cm2 Nearest standard sizes (mean relative difference): - A5 148 x 210 mm, 0% off - STATEMENT 139.7 x 215.9 mm, 4.2% off - HALF LETTER 139.7 x 215.9 mm, 4.2% off - JUNIOR LEGAL 127 x 203.2 mm, 8.7% off ISO: A0 is 1 m2 at 1:1.414; each next size halves the long side. B is the geometric mean of A(n) and A(n-1); C is the geometric mean of A(n) and B(n). Envelopes in C sizes hold A sizes of the same number (a C5 envelope holds an A5 sheet flat). Limits: published sizes are rounded to whole millimetres, so computed geometric means can differ by 1 mm. Trim tolerances vary by printer. Some US 'poster' sizes are trade names, not standards.
What you get
Dimensions in four units, pixels at 72, 96 and 300 ppi, aspect ratio, area, and nearest sizes
What it cannot do
Covers the named ISO, US and card sizes in its list; anything else needs custom width and height.
Who it is for
- Designers
Free and Pro
| Free | 25 runs a day per IP address, up to 100,000 characters a run. |
|---|---|
| Pro | No daily limit, 300 requests a minute, up to 200,000 characters a run. |
Use it from your assistant
The tool is called convert_paper_size. Connect the server once, then ask for it by name or just describe the job. Install steps for each app.
claude mcp add --transport http designers https://designers.allthepossibles.com/mcpcurl -X POST https://designers.allthepossibles.com/api/paper-size-converter -H 'content-type: application/json' -d '{"size":"A5","width":"","height":"","unit":"mm"}'Try it here
The form starts with the same example input, so you can run it first and then swap in your own.
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