Image Resize Percentage Calculator
Calculate image scaling percentage.
Keep or share the finished result
Copy or share after running the tool. Saved tools and settings stay in this browser.
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Calculate image resize percentage
Resizing by percentage is common in image editors, layout tools and export workflows. Enter original width and height plus target width and height to calculate the width scale, height scale and fit-inside scale. It is useful for preparing website images, print assets, thumbnails and social media exports.
Preserve aspect ratio
When width and height scales differ, use the fit-inside percentage to preserve the image shape without cropping.
Frequently asked questions
What does fit-inside scale mean?
It is the smaller of the width and height scale, so the resized image fits inside the target box.
Does this crop the image?
No. It only calculates resize percentages.
Can I enlarge images with it?
Yes, but enlarging can reduce visible sharpness if the source image is too small.