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Standard Paper Size Dimensions
Formula
Paper sizes vary between the ISO standard (A series, used globally) and North American sizes (Letter, Legal, Tabloid). This converter shows dimensions in millimeters, inches, and pixels at your chosen DPI.
The ISO A series is based on an aspect ratio of 1:√2, where each size is half the area of the next larger size. A4 (210×297 mm) is the most common worldwide.
Common use cases:
- Setting up print documents in design software
- Calculating pixel dimensions for digital templates
- Comparing paper sizes across ISO and US standards
Frequently Asked Questions
Maria Gonzalez
Registered Dietitian, RD, MPH
Maria is a Registered Dietitian with a Master's in Public Health. She focuses on evidence-based nutrition assessment tools including BMI, calorie calculations, and body composition analysis.
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