Print PPI Calculator

Calculate print pixel density from pixel width and physical print width.

How to use Print PPI Calculator

1. Enter Pixel Width, Print Width, Print Size Unit. 2. Choose inches, cm or mm for the physical size. PPI always means pixels per inch; centimetres use exactly 2.54 per inch and millimetres 25.4 per inch. Match the same axis. This is a numeric estimate, not a file/metadata transformation or printer guarantee. 3. Select Calculate or press Enter. 4. Select Copy result to copy the answer, or Reset to clear the form and result.

Why use this tool?

Choose inches, cm or mm for the physical size. PPI always means pixels per inch; centimetres use exactly 2.54 per inch and millimetres 25.4 per inch. Match the same axis. This is a numeric estimate, not a file/metadata transformation or printer guarantee.

How the calculation works

PPI = pixel count along one axis ÷ printed inches along that axis. Choose inches, cm or mm for the physical size. PPI always means pixels per inch; centimetres use exactly 2.54 per inch and millimetres 25.4 per inch. Match the same axis. This is a numeric estimate, not a file/metadata transformation or printer guarantee. Counts and dimensions use the declared rounding convention; other numbers display up to three decimal places where applicable. Nonzero subsecond durations are labelled. Durations round to the nearest second; nonzero subsecond durations are labelled. File-size output units are decimal. Changing an input label does not convert filled values.

Example

Worked example: Pixel Width = 3000; Print Width = 10; Print Size Unit = "inches". Result: 300 PPI.

Practical tip

Check the input labels and assumptions against the print ppi task before reusing the number.