Question 1

What are standard poster sizes?

Accepted Answer

A3: 297×420mm. A2: 420×594mm. A1: 594×841mm. US: 18×24, 24×36, 27×40 inches.

Question 2

What resolution for posters?

Accepted Answer

Depends on viewing distance. Up close: 300 DPI. Wall posters: 150 DPI. Billboards: 30-75 DPI.

Question 3

Is this conversion mathematically exact?

Accepted Answer

Yes, this converter uses precise conversion factors based on international standards. Results are accurate to the displayed precision.

Question 4

Can I use this for professional applications?

Accepted Answer

This converter is suitable for educational and general purposes. For critical professional applications, always verify with authoritative sources.

Poster Size Converter

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