Here it is

This is my warmup calculator. Have fun with it.
I was looking for a better way to lift, and someone over on Fitocracy suggested a warmup routine including lifting half the intended workout weight, then 75%, then 85%.
Rather than try to do math while lifting, I wrote an app to do it.

What this does is pretty simple: type in the workout weight and hit enter, or click the pretty button.
The app calculates the percentages, then tells you how to load a standard 45lb Olympic barbell to get the desired weight. The loading is for each side, so when it says 1 45lb plate, that's 1 per side. And if you couldn't figure that out...

It would be easy to add in a pair of radio buttons to switch it from Imperial to metric. If you can tell me how much a metric bar weighs, and what the common metric plates are, I can do it.

It should also be very easy to localize. Right now it's in American English, but all the displayed text is a variable. Loading translations by auto-detecting the OS language would be quite easy, if you care to provide translations. It's also not worth doing unless we add the metric weights, too.

This app is self-contained, with no .ini files (at least until we add language packs.) It's written in AutoIT.
Source code and compiled 32- and 64-bit binaries are provided.