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Image Aspect Ratio Calculator

Upload an image or enter dimensions manually to calculate the simplified aspect ratio and proportional width or height.

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Upload Image (Optional)

JPG, PNG or WebP

Width (px)

Height (px)

Aspect Ratio—

Decimal Ratio—

Orientation—

Calculate Matching Dimension

New Width (px)

Matching Height

New Height (px)

Matching Width

Calculate Image Aspect Ratio Online

Find the simplified width-to-height ratio of an image, such as 16:9, 4:3, 1:1 or another custom ratio. You can upload an image or type dimensions manually.

Keep Dimensions Proportional

After calculating a ratio, enter a new width to get the matching height, or enter a new height to get the matching width.

Are uploaded images sent to a server?

The uploaded image is read directly in your browser instead of intentionally uploading it to a Tool Digital Hub server.