PixelSizes

Print tools

Print Scaling Calculator

Calculate a copier or document scaling percentage between two sizes, with an optional margin on every target edge.

Your dimensions

On your device

The source document’s full width.

The source document’s full height.

The physical sheet width before margins.

Keep the intended target orientation.

Also applies to the margin.

Enter 0 to use the full sheet. This does not establish your printer’s capabilities.

Fit keeps all content inside the margins. Fill covers the printable area and can crop.

Use a decimal point, without commas. Physical lengths and PPI accept up to 4 decimal places.

Example result

70.4762% print scale

Fit 210 × 297 → 148 × 210 mm

Scaled document
148 × 209.31 mm
Usable target
148 × 210 mm
Content retained
100%
Target sheetScaled document · proportions only
Illustrative geometry · proportions, not actual screen size

The whole page fits within the entered margins. Extra space is distributed evenly.

Keep the calculated percentage when setting the print dialog. A second automatic Fit option can change it again.

Calculation details & inputs
Inputs used for this result
Original width210
Original height297
Target sheet width148
Target sheet height210
Unit for every lengthMillimeters (mm)
Margin on each edge0
Scaling modeFit within margins
Result details · 6 decimals or 3 significant digits for tiny values
Scale (%)70.47619
Scaled width (mm)148
Scaled height (mm)209.314286
Usable width (mm)148
Usable height (mm)210
Centered document left position (mm)0
Centered document top position (mm)0.342857
Content removed (%)0

Behind the numbers

How the calculation works

Fit scale = min(usable target width ÷ source width, usable target height ÷ source height) × 100%.

The calculation assumes centered placement and uniform scaling. Printer drivers can add margins or their own fit settings. Check a proof before printing a full run.

Results use the numbers you enter. See the methodology for precision, accepted ranges and sharing behavior.

Reference notes

References checked September 28, 2026. Calculations and worked examples are our own.

Useful answers

Common questions

Why is A4 to A5 not exactly 70.71%?

Named sheets use rounded whole-millimeter dimensions. Fit compares both actual side ratios, so the limiting axis determines the percentage. For 210 × 297 mm to 148 × 210 mm with no margin, the fit scale is approximately 70.4762%.

Will the percentage override printer margins?

No. Enter the usable margins required by your printer and check its print dialog. A driver’s additional Fit setting can change the final scale after you enter a percentage.

A practical next read

Related print guides

All articles →

Related calculators

All tools →
Print / 01

Pixels → print size

Convert pixels to inches, cm or mm at any PPI. Convert one measurement instantly, compare a PPI table, or calculate the width and height of an image.

Open tool
Print / 02

Print size → pixels

Start with a physical size and a target PPI. Calculate a whole-pixel canvas with an explicit rounding choice.

Open tool
Print / 03

Find an image’s DPI

Calculate the DPI (PPI) of an image at your print size: DPI = pixels ÷ inches. Choose a local image or enter its pixels, then compare fit versus crop.

Open tool