About Printfit
One calculation.
A visible method.
Printfit is an independent free calculator for proportional enlargement or reduction of a design onto a chosen paper rectangle. It aims to make the assumptions behind a practical quantity or layout easier to check.
A focused working page
This site contains one calculator, an original guide and the supporting information needed to understand its model. No account or payment is required. Input values are processed in your browser tab.
Results you can trace
The guide shows formulas, original worked examples and the limits of the model. A calculation follows the numbers you enter; it does not inspect a product, printer, material or physical project.
Funding
Cloudflare Web Analytics is enabled in this site's hosting settings for aggregate traffic and page-performance reports when its beacon loads. Read Privacy for measurement and hosting details. The calculator remains free. Publisher identification does not itself activate advertising or establish approval or earnings; the site's actual advertising configuration is described in the privacy notice.
Corrections
Use the shared portfolio contact address for calculation corrections or privacy enquiries. Include the relevant inputs and expected arithmetic. Original method and examples prepared 18 October 2026.