Screen Printing Expand Calculator

Calculate underbase expansion like Photoshop's "Expand Selection"

Expand Settings

Expand By (pixels)

Main Object Size (px)

This object size and resolution always follows object

Color Legend

Red = Main Object (Original design)

Blue = Underbase (Expanded result)

The blue area shows the underbase size needed for your main object (red), expanded by the pixels you set.

Base Creation Result

Your base creation size:

0.4mm

(10px expand at 600 PPI)

Expand Preview

Underbase

Main Object: 600px

Underbase: 580px

Expand: -10px

Expand Quality

Expand Size

Optimal

Physical Size

0.4mm