What are the dimensions of A1 paper?

594 x 841 mm or 23.39 x 33.11 inches.

What pixel dimension do I need for A1 at 300 DPI?

You need a file resolution of at least 7016x9933 pixels to print at 300 DPI cleanly.

How does ResizeFlow automate this process?

Upload your master design. ResizeFlow automatically generates all standard aspect ratios at 300 DPI in a single ZIP package.

A1 Paper Dimensions Size Guide: mm & Inches Table

Quick Answer

A1 paper dimensions are 594 x 841 millimeters (23.4 x 33.1 inches). In printable wall art, A1 is the master design size for the ISO paper ratio family. A single high-resolution A1 file can be scaled down to print A2, A3, A4, and A5 prints. ResizeFlow automates this setup by automatically upscaling and formatting a single design file into A1 sizes at 300 DPI in seconds.

Understanding the A1 Poster Format

A1 paper is half the size of A0 and is one of the most popular dimensions for commercial posters, design presentation boards, and fine art prints.

To ensure your shop covers all common aspect ratios, review our list of sizes in the 2:3 printable size guide.

A1 Dimensions and Pixel Requirements

To print A1 layouts cleanly, use these dimensional conversions:

Millimeters: 594 x 841 mm
Inches: 23.39 x 33.11 inches
Pixels at 300 DPI: 7016 x 9933 pixels

Preparing A1 Printables with ResizeFlow

Designing at large dimensions ensures quality downscaling but requires robust file preparation. ResizeFlow automates this workflow.

Upload your design, select your target aspect ratios, and choose either the Scale to Fit (Preserve Entire Artwork) or Smart Center Crop modes. ResizeFlow upscales each file to 300 DPI and compiles them in structured ZIP folders.

A1 Paper Dimensions Size Guide