Paper sizes in cm, inches and pixels
Exact dimensions of A, B and US paper sizes, and their size in pixels for printing.
How it works
A sizes keep a √2 ratio: each one is half the previous (A0 = 1 m²). Pixels = size in inches × DPI.
Results are for guidance only and do not replace professional advice.
Worked example
With the default values:
- FormatA4
- Print resolution (DPI)300 (print)
you get:
- Dimensions210 × 297 mm
- In centimetres21 × 29.7 cm
- In inches8.27 × 11.69 in
- In pixels at 300 DPI2,480 × 3,508 px
Frequently asked questions
How does the “Paper sizes in cm, inches and pixels” tool work?
A sizes keep a √2 ratio: each one is half the previous (A0 = 1 m²). Pixels = size in inches × DPI.
What do I need to enter?
Just fill in: format, print resolution. The result updates as you type.
Can you give an example?
Format: A4; Print resolution (DPI): 300 (print) → Dimensions: 210 × 297 mm; In centimetres: 21 × 29.7 cm.
Is this calculator free, and is my data private?
Yes. HOD Calc is completely free with no sign-up. The calculation runs in your browser: nothing you type is sent or stored.