Aspect Ratio Calculator
Calculate image aspect ratio from width and height. Find matching resize dimensions for photos, thumbnails, and social images.
Calculate the target first, then convert, compress, resize, or clean the image with AI when needed.
Calculate Aspect Ratio
Calculate dimensions, compression, file size, print size, and web image budget from one set of inputs.
2,073,600 total pixels, 2.07 MP.
Estimated WEBP output at 80% quality.
Save about 950 KB to reach 250 KB.
Estimated resized file: 113 KB.
6.40 x 3.60 in
At 300 DPI. Try 300 for high-quality prints or 150 for larger viewing-distance prints.
125 KB each
Current estimate is 3.54 MB for 8 images against a 1,000 KB budget.
Keep images proportional when resizing
Aspect ratio is what keeps an image from looking stretched. This calculator reduces width and height into a clean ratio and suggests matching dimensions.
Use it before resizing product photos, thumbnails, blog images, social posts, and website hero images.
Image planning targets
Frequently asked questions
How do I calculate aspect ratio?
Divide width and height by their greatest common divisor. For example, 1920 x 1080 becomes 16:9.
Why does aspect ratio matter?
It keeps images proportional when cropping, resizing, or fitting them into fixed layouts.
What is the best aspect ratio for product photos?
Square 1:1 is common for marketplaces, while 4:5 and 3:4 are useful for catalog and social commerce images.
Plan the image, then improve it
Use free calculators for sizing and compression decisions, then use Photo Cut tools when the image needs AI cleanup, watermark removal, logo removal, or smarter compression.