DPI & Print Size Calculator
Convert pixels to print size in inches and cm at any DPI, and back.
Aspect Ratio Calculator
Find the missing width or height for any ratio, or the ratio of any size.
Runs in your browser. Your images are never uploaded.
How to use the Aspect Ratio Calculator
Work out the height for a width at 16:9, the width for 4:5, or what ratio 1920 × 1200 actually is. Results update as you type, with presets for the most common photo and video ratios.
- Choose a ratioPick a preset or type your own.
- Enter one dimensionType the width or the height you know.
- Read the resultThe other dimension is calculated instantly.
Need it done by hand? Try our e-commerce editing service
One package for store images: background, crop, alignment, colour and retouching.
Aspect Ratio Calculator questions
Everything you need to know before sending your first images. Still unsure? Ask us anything.
What is the most common ratio for product photos?
1:1 for marketplaces and stores, 4:5 for Instagram feed posts and 16:9 for banners and video.
Why is my ratio shown as an odd number like 8:5?
The tool reduces the size to its simplest whole-number ratio (1920 × 1200 is 8:5, also known as 16:10) and shows the nearest common name.
Is this tool free?
Yes, completely. There is no sign-up, no watermark and no usage limit.
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Ready to make your photos sell?
Send a few images and tell us what you need. You get an exact price and delivery time within one business day, with no obligation.