Print Size and DPI Calculator
Convert a print size between millimetres, centimetres, inches and pixels at the DPI you set.
Your result
Enter the width to see the result. Add the height to get the full size.
How to use it
- Enter the width, and add the height if you want the full size.
- Choose the unit of the size and the unit to convert to.
- Enter the DPI, then read the result and the other units.
Examples
- A4 at 300 DPI210 × 297 mm 2480 × 3508 px
- One inch at 300 DPI1 in 300 px
- 1920 × 1080 image at 96 DPI1920 × 1080 px 50.8 × 28.575 cm
Tool details and privacy
Enter the width and height of a print and choose the resolution to get the image size in pixels. It also works the other way, from pixels to a print size.
Pixels = size in inches × DPI. One inch is 25.4 millimetres.
Options
- Width alone, or width and height together.
- Four units: millimetres, centimetres, inches and pixels.
- Resolution from 1 to 2400 DPI.
Limits
- Pixels are rounded to the nearest whole number, and other units to four decimal places.
- A size can be up to 1000000 in any unit.
- It works from the size and the DPI only. It does not open an image file or read its dimensions.
Privacy
The numbers are calculated in your browser and are not sent to any server.
Questions
How many pixels is A4 at 300 DPI?
2480 × 3508 pixels, because A4 is 210 × 297 millimetres.
How do I convert centimetres to pixels?
Divide the centimetres by 2.54 and multiply by the DPI. For example, 10 cm at 300 DPI is 1181 pixels.
Which DPI should I use for print?
300 DPI is common for print read at close range, such as cards and leaflets. Large posters seen from a distance can use less. Ask your printer which resolution they need.
What is the difference between DPI and PPI?
DPI counts printer dots per inch and PPI counts image pixels per inch. When sizing an image for print, the same number is used for both.