Image Crop Percentage Calculator
Calculate what percentage of an image is removed by the crop dimensions.
How to use Image Crop Percentage Calculator
1. Enter Original Pixel Area, Cropped Pixel Area. 2. Areas are whole pixel counts. Retained area cannot exceed original area; this measures area removed rather than dimension change. 3. Select Calculate or press Enter. 4. Select Copy result to copy the answer, or Reset to clear the form and result.
Why use this tool?
Areas are whole pixel counts. Retained area cannot exceed original area; this measures area removed rather than dimension change.
How the calculation works
Removed percentage = (original pixel area − retained pixel area) ÷ original area × 100. Areas are whole pixel counts. Retained area cannot exceed original area; this measures area removed rather than dimension change. Counts and dimensions use the declared rounding convention; other numbers display up to three decimal places where applicable. Nonzero subsecond durations are labelled. Durations round to the nearest second; nonzero subsecond durations are labelled. File-size output units are decimal. Changing an input label does not convert filled values.
Example
Worked example: Original Pixel Area = 1000; Cropped Pixel Area = 750. Result: 25% removed.
Practical tip
Check the input labels and assumptions against the image crop percentage task before reusing the number.
Frequently asked questions
What exactly does Image Crop Percentage Calculator calculate?
Removed percentage = (original pixel area − retained pixel area) ÷ original area × 100.
Which units or counting rules apply?
Areas are whole pixel counts. Retained area cannot exceed original area; this measures area removed rather than dimension change.
Does this inspect, change or upload my files?
This page calculates the entered values or text in the browser. Numeric image/media tools do not transform files. Check the worked example and stated counting basis; the result does not certify device, search-engine or accessibility outcomes.