Ever wondered what the difference is between A4, A5, or B5 paper? Whether you’re printing documents, designing stationery, or shopping for notebooks, knowing your paper sizes can save you time and frustration.
📐 What Are Standard Paper Sizes?
📄 A Series – The Everyday Standard
The A series is the most widely used in the world (except in North America). It’s based on simple math: fold a sheet in half, and you get the next size down.
Size Dimensions (mm) Common Use
A0 841 × 1189 Posters, technical drawings
A1 594 × 841 Flip charts, presentations
A2 420 × 594 Diagrams, art prints
A3 297 × 420 Tabloid printing, spreadsheets
A4 210 × 297 Standard printer paper
A5 148 × 210 Notebooks, flyers
A6 105 × 148 Postcards, small journals
📚 B Series – For Books and More
The B series is slightly larger than A sizes and often used in publishing.
Size Dimensions (mm) Common Use
B4 250 × 353 Magazines, textbooks
B5 176 × 250 Notebooks, novels
B6 125 × 176 Pocket books, planners
✉️ C Series – Envelope Sizes
Need to mail your A-size paper? The C series is designed for envelopes, so everything fits perfectly.
Size Fits Dimensions (mm)
C4 A4 unfolded 229 × 324
C5 A5 or A4 folded once 162 × 229
C6 A6 or A4 folded twice 114 × 162
🔍 Quick Tips:
A4 = your go-to for printing
A5 = great for notes and planners
B-series = a bit bigger, often used in publishing
C-series = for envelopes
🎯 Final Thought:
Understanding paper sizes helps you print smarter, design better, and waste less. Whether you’re sending a letter or printing a portfolio, this guide’s got you covered.
