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DPI and Print Size Calculator

Check whether a picture has enough pixels for the print you want.

Runs in your browser · No uploads

What do you want to know?
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300 DPI is the usual print-shop standard. To print larger at the same sharpness you need more pixels: changing the DPI number alone doesn't add detail. Related: Change Image DPI, Image Resizer.

  • Nothing leaves your device
  • No server-imposed size limits
  • No sign-up, no watermark
  • Free

How to use it

  1. Pick what you want to find: print size, pixels needed, or DPI.
  2. Enter the numbers, or read the size from an image.
  3. Read the result and the quality hint.

Rules of thumb

DPIQuality
300Sharp prints you look at up close (photos, flyers)
200–240Good for most prints
150Posters seen from a step away
72–100Screens only; prints look soft

Good to know

  • DPI only matters for printing. On screens, only the pixel size counts.
  • A4 at 300 DPI needs 2480 × 3508 pixels.
  • To change the DPI value stored in a file without changing the pixels, use the Change DPI tool.

Calculated in your browser

The calculations run in your browser as you type. Nothing you enter is sent anywhere.

Frequently asked questions

How many pixels do I need for an A4 print?

2480 × 3508 at 300 DPI, or 1754 × 2480 at 212 DPI for a decent result.

Does changing DPI make my picture sharper?

No. Only more pixels do. The DPI value just tells printers how big to print.