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Interactive paper size comparison tool — see A4 vs A3 vs Letter side by side.

Paper Size Visualizer

Free tool by NJ Cloud Printer

Visually compare paper sizes side-by-side with real dimensions in mm, cm, and inches. A0 to A6, Legal, Letter.

Compare Sizes

A4
210 × 297 mm
Standard documents, letters, forms
A3
297 × 420 mm
Spreadsheets, large drawings, menus

Visual Comparison

A4
210 × 297 mm
A3
297 × 420 mm

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Frequently Asked Questions

How do A4 and Letter sizes compare visually?

A4 (210×297mm) is slightly narrower and taller than Letter (216×279mm). Use the visualizer to see the exact difference.

What is the largest standard paper size?

A0 (841×1189mm) is the largest A-series size, commonly used for large posters and technical drawings.

How many A4 sheets fit on A0?

16 A4 sheets fit on a single A0 sheet, since each A size doubles the previous one (A0 → 2×A1 → 4×A2 → 8×A3 → 16×A4).