Paper & Layout
Custom Paper Size Calculator
Convert a custom paper size and calculate its aspect ratio and pixel dimensions.
Custom Paper Size Calculator
Calculate custom size, aspect ratio, and pixels.
Custom width.
Custom height.
Measurement unit.
For pixel dimensions.
Ready to calculate
Adjust the inputs, then click Start. Change values and click Start again whenever you want a fresh result.
Custom sizes need extra checking
Before ordering a custom print size, confirm minimum and maximum sizes with the print shop and check whether special trimming is needed.
How to use this tool
- Enter your custom width and height.
- Choose the measurement unit.
- Set DPI to see pixel dimensions.
Common use cases
- Custom invitations
- Packaging inserts
- Non-standard print pieces
Frequently asked questions
Should I trust this instead of my print shop?
Use these calculators for planning, then confirm final requirements with your printer or print shop.
Do these tools upload my files?
No. The calculators use typed dimensions and run in your browser. They do not upload images or documents.