Paper Size Lookup
Find exact paper dimensions and convert between units instantly
Paper Sizes
Size Comparison
Select paper sizes from the left to compare dimensions
When to Use Paper Size Lookup
International Document Design
Design documents that work across different regions by understanding the differences between ISO A4 and North American Letter sizes.
Print Shop Operations
Quickly reference exact paper dimensions for setting up printing equipment and ensuring accurate print layouts across different paper sizes.
Graphic Design Projects
Convert paper sizes between units for precise design work, ensuring your layouts fit perfectly whether working in millimeters, inches, or points.
Office Administration
Standardize document formats across international offices by understanding regional paper size differences and conversion requirements.
Educational Materials
Create educational content that prints correctly in different countries by using the appropriate regional paper size standards.
Web Development
Implement print-friendly web pages by understanding paper dimensions and ensuring your CSS print styles work across different paper formats.
Frequently Asked Questions
What is the difference between A4 and Letter paper size?
A4 paper measures 210 × 297 mm (8.27 × 11.7 inches) while Letter size is 216 × 279 mm (8.5 × 11 inches). A4 is slightly taller and narrower than Letter size, which can cause formatting issues when switching between standards. This 6% height difference and 3% width difference can affect document layouts and may cut off content if not properly scaled.
How do I convert paper sizes between different units?
Our tool automatically converts paper dimensions between millimeters, centimeters, inches, and points. Simply search for any paper size and use the unit selector to view measurements in your preferred format. The conversions are based on standard ratios: 1 inch = 25.4mm = 2.54cm = 72 points.
What are the most common paper sizes used worldwide?
The most common paper sizes are A4 (210×297mm) used internationally in most countries, Letter (8.5×11 inches) and Legal (8.5×14 inches) used in North America, A3 (297×420mm) for larger prints and presentations, and A5 (148×210mm) for small documents, booklets, and notebooks.
Is this paper size lookup tool free to use?
Yes, our paper size lookup tool is completely free to use with no registration, login, or subscription required. You can access all paper size information, unit conversions, and comparison features without any limitations or hidden costs.
What paper size standards are included in this tool?
Our comprehensive database includes ISO A-series (A0-A10), B-series, C-series for envelopes, North American sizes (Letter, Legal, Tabloid, Executive), ANSI sizes (A-E), Japanese JIS sizes, and other international standards used in various countries and industries.
Can I compare different paper sizes side by side?
Yes, our comparison feature allows you to select multiple paper sizes and view their exact dimensions side by side in all units. This makes it easy to understand size relationships, plan document layouts, and choose the right format for your specific needs.
How accurate are the paper size measurements?
All measurements in our tool are based on official ISO, ANSI, and regional standards with precision to decimal places. The conversions use exact mathematical ratios to ensure accuracy for professional printing, design work, and technical applications.
Can I print a reference card with paper sizes?
Yes, you can generate and print a reference card containing the paper sizes you've selected for comparison. This creates a handy physical reference that you can keep at your desk or print shop for quick dimension lookups.
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