Image Crop Percentage Calculator
Estimate how much image area is lost when cropping one aspect ratio to another.
Enter your job values
Use the real values from your job. Optional fields can stay blank; zero should only be used when the value genuinely does not apply.
Your result will appear here
4 required values are still missing.
Common photo print sizes do not share one aspect ratio
| Print size | Ratio | What happens to a 3:2 camera image |
|---|---|---|
| 4×6 | 3:2 | No ratio crop |
| 5×7 | 7:5 | Some width is cropped |
| 8×10 / 16×20 | 5:4 | More width is cropped |
| 8×12 / 12×18 / 20×30 / 24×36 | 3:2 | No ratio crop |
What the result is useful for
Image Crop Percentage Calculator is useful when you need to turn pixel dimensions and a physical output size into a decision about resizing, cropping or whether the source file has enough raster detail.
How the calculation works
Crop loss compares source and target aspect ratios and estimates the retained rectangular image area for a centered crop.
What this calculator cannot know
The math can describe pixels, PPI and geometry, but it cannot judge subject detail, sharpening, resampling quality, printer process, media or viewing distance. Use the output provider’s requirement when one exists.