What is the difference between A4 and letter paper sizes?

A4 paper measures 210 x 297 mm while letter paper measures 8.5 x 11 inches (215.9 x 279.4 mm), making letter paper slightly wider but shorter than A4.

How do I scale a document from A4 to letter size correctly?

To scale an A4 document to letter size, use a copy ratio of approximately 94% to adjust the content while maintaining proper layout.

Why is the copy ratio for A4 to letter scaling about 94%?

Because A4 and letter sizes differ slightly in dimensions, a 94% scaling ratio helps fit the document content proportionally without distortion.

What is the Copy Ratio for Scaling A4 to Letter Size Paper?

Learn the exact copy ratio to scale documents from A4 to Letter size (8.5" x 11") for perfect layout and proportion adjustments.

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Oct 16, 2026

The copy ratio for scaling A4 to letter size (8.5" x 11") or vice versa is approximately 94%. This ratio adjusts the content to fit within the slightly different dimensions of the two paper sizes, ensuring your document maintains its proper layout and proportions.

FAQs & Answers

What is the difference between A4 and letter paper sizes? A4 paper measures 210 x 297 mm while letter paper measures 8.5 x 11 inches (215.9 x 279.4 mm), making letter paper slightly wider but shorter than A4.
How do I scale a document from A4 to letter size correctly? To scale an A4 document to letter size, use a copy ratio of approximately 94% to adjust the content while maintaining proper layout.
Why is the copy ratio for A4 to letter scaling about 94%? Because A4 and letter sizes differ slightly in dimensions, a 94% scaling ratio helps fit the document content proportionally without distortion.

Watch More

For more practical printing and document formatting tips, check out our guides on scaling between other common paper sizes and best practices for preserving document layout when resizing.

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