Aspect Ratio Calculator
Whether you're preparing a limited edition print or resizing a digital illustration, getting the right aspect ratio and dimensions is essential. Use this free tool to calculate your artwork’s aspect ratio, convert pixel dimensions to inches or cm, and find the most suitable standard print sizes — including A-series formats.
Created for artists, photographers and designers, this tool helps you prep your files like a pro — with print-perfect accuracy.
Aspect Ratio Calculator
Calculate your artwork's aspect ratio, convert units, and explore standard frame sizes.
Upload an image or enter dimensions manually.
How to Use the Aspect Ratio Calculator
Whether you're preparing artwork for print or digital display, this tool helps you maintain perfect proportions. Here’s how to use it:
1. Enter Your Dimensions
- Input the width and height of your artwork.
- Select the units: Inches, Centimetres, or Pixels.
- (Optional) Upload an image — the dimensions will be auto-filled for you.
2. Calculate
Click the “Calculate Aspect Ratio” button. The tool will display:
- Your simplified aspect ratio (e.g. 3:4)
- Whether it’s Portrait, Landscape, or Square
- The closest standard ratio (for framing)
- Common print sizes that match your ratio
3. Resize with Confidence
Want to change the size while keeping the same ratio?
- Enter a new width or height, and the calculator will tell you the corresponding dimension that keeps your artwork proportionate.
What Is Aspect Ratio — and Why Does It Matter?
Aspect ratio is the proportional relationship between the width and height of an image. It’s usually expressed as a ratio (like 3:4 or 16:9) and determines the shape of your artwork when printed.
Why is it important?
- Maintaining your artwork's original aspect ratio ensures your composition isn’t unintentionally cropped or distorted when printing.
- Matches standard frame sizes: Choosing a compatible ratio helps you offer artworks in readily available print/frame formats (like A2, 30×40cm or 16×20”).
- Simplifies resizing: Once you know your ratio, you can scale your artwork up or down without losing proportions.
This is especially helpful when preparing files for exhibitions, online listings, or professional printing.
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Common Artwork Aspect Ratios
Frequently Asked Questions
Why is aspect ratio important for artists and illustrators?
Knowing your artwork’s aspect ratio helps avoid cropping issues, ensures consistency across editions, and aligns your work with standard frame sizes — which is crucial for selling or exhibiting your art.
How do I calculate the aspect ratio of my artwork?
Use our free aspect ratio calculator by entering your artwork’s width and height in pixels, inches or centimetres. The tool instantly shows your aspect ratio and matches it to common print sizes — no maths needed.
What is the best aspect ratio for printing artwork?
There’s no single best ratio — it depends on your artwork and how you plan to frame or display it. Common print-friendly aspect ratios include 3:4, 4:5, 5:7, and ISO A-series (1.414:1). This tool suggests the closest standard size based on your original dimensions.
How do I resize artwork without losing the aspect ratio?
To resize while maintaining proportions, use the “resize” fields in the calculator. Enter a new width or height, and the tool calculates the corresponding dimension automatically to preserve your original aspect ratio.
What are standard artwork print sizes?
There are many sizes to choose from, but a selection includes:
- Inches: 8×10, 12×16, 16×20, 20×30, 30×40
- Centimeters: 30×40cm, 40×50cm, 50×70cm
- A-series: A4, A3, A2, A1, A0
Our aspect ratio tool recommends standard sizes that closely match your artwork's aspect ratio.
Can I use this aspect ratio calculator for photography?
Yes! This calculator works perfectly for photographers preparing prints or resizing images for portfolios, exhibitions, or galleries.
Meet the Creators
Our Aspect Ratio Calculator was developed by East Side Studio London, in collaboration with art business professionals and market analysts. We aim to provide artists with the tools they need to succeed in a competitive market.
Have any questions. Contact us at support@eastsidestudiolondon.co.uk
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