Work out icon set sizes instantly with clear inputs, formula shown and shareable results.
Raster icons must be exported at the base size multiplied by each supported pixel density, so a 24 px icon on a 3x display needs a 72 px asset. Exporting at non-integer multiples produces blurred edges on pixel-aligned icons, which is why 1x, 2x and 3x are used rather than arbitrary sizes.
Export sizes
size at density k = base size x k
size at density k = base size x k. Raster icons must be exported at the base size multiplied by each supported pixel density, so a 24 px icon on a 3x display needs a 72 px asset.
Exporting at non-integer multiples produces blurred edges on pixel-aligned icons, which is why 1x, 2x and 3x are used rather than arbitrary sizes.
Enter base icon size, highest pixel density to support. The defaults shown are a realistic worked example — swap in your own figures to get a result you can use.