✳ FREE CALCULATOR
Crop calculator
See exactly how much of your frame disappears when it is cropped to a different aspect ratio, and what the resulting crop box is.
- Crop box
- 608 × 1080
- Frame kept
- 31.6%
- Cut from each side
- 656 px left and right
- Alternative to cropping
- pad the top and bottom instead
Padding keeps the whole frame but adds bars; cropping fills the frame but loses edges.
Calculated as: centre-crop box = the largest rectangle of the target ratio that fits inside the source
What this assumes
- Assumes a centred crop. Moving the crop box changes what is lost, not how much.
- Does not know where your subject is - a 40% loss can be harmless or fatal depending on framing.
Koldflux works these numbers out for you when it exports - the calculators exist because our own pipeline needed them first.
Automate this in Koldflux