Crop Padding Calculator

Calculate equal side padding needed to fit the entered content width inside a target width.

How to use Crop Padding Calculator

1. Enter Canvas Width, Content Width. 2. Widths are positive whole pixels; content cannot exceed canvas. Odd differences produce half-pixel arithmetic; actual raster placement requires a rounding choice. 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?

Widths are positive whole pixels; content cannot exceed canvas. Odd differences produce half-pixel arithmetic; actual raster placement requires a rounding choice.

How the calculation works

Equal horizontal padding = (canvas width − content width) ÷ 2. Widths are positive whole pixels; content cannot exceed canvas. Odd differences produce half-pixel arithmetic; actual raster placement requires a rounding choice. 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: Canvas Width = 100; Content Width = 60. Result: 20 px per side.

Practical tip

Check the input labels and assumptions against the crop padding task before reusing the number.