Icon Calculator for Mac

From Narattaphol Charoenphandhu:

Icon Calculator is a little application (124K) developed for predicting output size of an icon set generated by Iconizer Pro (unless you want to use a typical calculator). Why? if size of Iconizer Pros source image is not x times of 32, iconizing engine will add a white border to fill the gap. Users need to adjust a source image to obtain the suitable size (Iconizer Pro will not touch your files since all details of professional graphic images are important). It supports image from clipboard (recommended), PICT and clipping files. QuickTime-compatible formats are now supported. You can also enter the size of source image by yourselves. Icon Calculator contains low-level codes which take little system resources and CPU times. So you can use it with CPU-consuming graphic editors (I did not incorporate Icon Calculator into Iconizer Pro since the latter consumes more CPU and might affect system performance).