Private print preparation toolkit

Know exactly how large your image can print.

Check real pixel dimensions, compare 300, 220, and 150 PPI print sizes, evaluate a target size, calculate bleed, and find the right export dimensions — without uploading the image.

Check an imageBrowse all tools
No uploadNo image storageNo analytics in the calculatorPPI-accurate formulas
Step 01

Choose a local image

The file is read in browser memory. This calculator has no upload endpoint and its security policy blocks outbound connections.

12 focused calculators

Every print dimension tool in one private toolkit.

Each page solves a distinct print-preparation question while sharing the same exact conversion engine.

01

Pixels to CM Converter

Convert pixel dimensions to centimeters with an explicit PPI setting. Get centimeters and inches instantly.

02

CM to Pixels Converter

Calculate the pixel dimensions required for any centimeter size at 150, 220, 300, or 600 PPI.

03

Pixels to Inches Converter

Convert image pixels to physical inches at any PPI, with the matching centimeter result included.

04

Image Print Size Calculator

Upload an image locally and calculate its maximum print dimensions at the PPI you choose.

05

Image PPI Calculator

Calculate horizontal, vertical, and effective PPI from pixel dimensions and a target print size.

06

3mm Bleed Calculator

Add bleed to a trim size and calculate the final physical canvas and required pixel dimensions.

07

A4 Pixels Calculator

Get exact A4 pixel dimensions for portrait or landscape output, with optional 3mm bleed.

08

Photo Print Size Checker

Upload a photo locally and compare its effective PPI across eight popular photo print sizes.

09

Business Card Pixel Size Calculator

Calculate business card pixel dimensions for US, European, Australian, and Japanese standards.

10

Poster Resolution Calculator

Check effective PPI for A-series and common inch-based poster sizes, plus required pixels at 150 and 300 PPI.

11

Image Resolution Checker

Read image dimensions locally and compare maximum sizes at 300, 220, 150, and 72 PPI.

12

Amazon KDP Cover Size Calculator

Calculate paperback cover width, height, spine, bleed, and 300 PPI canvas size using current published KDP formulas.

Why PPI matters

A pixel count becomes a physical print size only after a PPI value is chosen. PrintPrepTools uses the exact relationship of 1 inch = 2.54 centimeters and keeps image PPI separate from printer hardware dot density.

inches = pixels ÷ PPI centimeters = inches × 2.54 required pixels = print inches × target PPI