Paper Size Chart & Guide
Complete guide to standard paper sizes for printing. Find dimensions for all common printer paper sizes including US Letter, Legal, A4, A3, and more.
US Paper Sizes
Letter, Legal, and Ledger sizes commonly used in North America
ISO A Series
International standard sizes from A0 to A6 used worldwide
Photo Sizes
Standard photo print sizes including 4×6, 5×7, and 8×10
Understanding Paper Sizes
Paper sizes vary by region and purpose. The most common systems are the US paper sizes (Letter, Legal) and the international ISO 216 standard (A4, A3, etc.). Understanding these different paper sizes is essential for printing, copying, and document preparation.
What is Standard Printer Paper Size?
The standard printer paper size depends on your location. In the United States and Canada, Letter size (8.5 × 11 inches or 216 × 279 mm) is the standard. In most other countries, A4 (210 × 297 mm or 8.27 × 11.69 inches) is the standard paper size for printing.
US Paper Sizes Chart
US paper sizes showing the relationship between different formats.
| Size Name | Inches | Millimeters | Common Use |
|---|---|---|---|
| Letter | 8.5 × 11 | 216 × 279 | Standard documents, letters |
| Legal | 8.5 × 14 | 216 × 356 | Legal documents, contracts |
| Ledger/Tabloid | 11 × 17 | 279 × 432 | Spreadsheets, newspapers |
| Executive | 7.25 × 10.5 | 184 × 267 | Business stationery |
| Statement | 5.5 × 8.5 | 140 × 216 | Invoices, half-letter |
ISO A Series Paper Sizes
The ISO 216 standard defines the A series of paper sizes used internationally. Each size is exactly half the area of the previous size. A4 is the most common size worldwide for business documents and printing.
ISO A series paper sizes showing the relationship between formats. A4 is the most common size worldwide.
| Size | Millimeters | Inches | Common Use |
|---|---|---|---|
| A0 | 841 × 1189 | 33.1 × 46.8 | Posters, technical drawings |
| A1 | 594 × 841 | 23.4 × 33.1 | Flip charts, diagrams |
| A2 | 420 × 594 | 16.5 × 23.4 | Drawings, diagrams |
| A3 | 297 × 420 | 11.7 × 16.5 | Posters, presentations |
| A4 | 210 × 297 | 8.3 × 11.7 | Standard documents, letters |
| A5 | 148 × 210 | 5.8 × 8.3 | Notepads, booklets |
| A6 | 105 × 148 | 4.1 × 5.8 | Postcards, flyers |
ISO B Series Paper Sizes
B series paper sizes are less common but provide intermediate sizes between A series. B5 is popular for books and notebooks.
ISO B series paper sizes providing intermediate sizes between A series formats.
| Size | Millimeters | Inches |
|---|---|---|
| B4 | 250 × 353 | 9.8 × 13.9 |
| B5 | 176 × 250 | 6.9 × 9.8 |
| B6 | 125 × 176 | 4.9 × 6.9 |
Photo Print Sizes
Standard photo sizes are optimized for photo printing and typically use inches as the measurement unit.
| Size | Inches | Millimeters | Common Use |
|---|---|---|---|
| 4×6 | 4 × 6 | 102 × 152 | Standard photo print |
| 5×7 | 5 × 7 | 127 × 178 | Photo frames, portraits |
| 8×10 | 8 × 10 | 203 × 254 | Large prints, displays |
Frequently Asked Questions
What size is printer paper?
Standard printer paper is Letter size (8.5 × 11 inches) in North America and A4 (210 × 297 mm) in most other countries.
What is the difference between A4 and Letter size?
A4 is slightly narrower and taller than Letter. A4 measures 210 × 297 mm (8.27 × 11.69 inches) while Letter is 8.5 × 11 inches (216 × 279 mm).
What are the dimensions of printer paper?
Standard US printer paper (Letter) is 8.5 inches wide by 11 inches tall. International A4 printer paper is 210 mm wide by 297 mm tall.
How do A paper sizes work?
A series sizes follow a simple pattern: each size is exactly half the area of the previous size. A4 folded in half makes A5, and two A4 sheets make an A3.
What is B5 paper size?
B5 paper measures 176 × 250 mm (6.9 × 9.8 inches). It's commonly used for books, notebooks, and intermediate printing needs between A4 and A5.
What is Legal size paper?
Legal size paper measures 8.5 × 14 inches (216 × 356 mm). It's 3 inches longer than Letter size and commonly used for legal documents and contracts.
What are metric paper sizes?
Metric paper sizes refer to the ISO 216 standard (A series) which uses millimeters. These include A4 (210 × 297 mm), A3 (297 × 420 mm), and other A series sizes.
Paper Reams Calculator
Calculate how many sheets you need for your printing project. A standard ream contains 500 sheets of paper.
Common Ream Quantities
Choosing the Right Paper Size
Select your paper size based on your region, printer capabilities, and document type:
- Standard documents: Letter (US/Canada) or A4 (International)
- Legal documents: Legal size in US, A4 or Foolscap internationally
- Presentations: Ledger/Tabloid or A3 for larger formats
- Photos: 4×6, 5×7, or 8×10 for standard photo prints
- Booklets: A5 or B5 for compact printed materials
Have More Questions?
Visit our FAQ page for answers to common questions about paper sizes, printer test pages, and print quality issues.