Crop Resolution Calculator
Cropping cuts away part of a photo, and the pixels in that part are gone for good. This shows how much resolution is left after you trim each side.
- Free
- Works offline after your first visit
- Saves on this device
- No sign-up
- Updated
How it works
Multiply each side's pixel count by the share you keep. Keeping half of each side leaves a quarter of the pixels, since the area shrinks in both directions.
The megapixel count is the width times the height, divided by one million. Check it against the size you plan to print.
Worked example
A 6,000 by 4,000 photo cropped to 50% of each side is 3,000 by 2,000 pixels, about 6 megapixels.
Questions
Does cropping lower quality?
It lowers the pixel count, so a crop printed large may look soft. The detail that remains is not changed by the crop itself.
Can I crop and then zoom in?
Zooming in does not add detail. It stretches the same pixels across more space, so check a crop at the print size you want.
Why keep a big original?
A large original gives you room to crop later. Keep the uncropped file and save crops as separate copies.
More like this
- DPI CalculatorPixels and print width give dots per inch.
- Aspect Ratio CalculatorWidth to height, and a new size at the same shape.
- Equivalent Exposure CalculatorShutter speed to match a new aperture.
- Frames to Seconds CalculatorClip length from frame count and frame rate.
- Handheld Shutter Speed CalculatorSlowest hand-held speed from focal length.
- Light Distance CalculatorHow much light is left at a new distance.