Bitcoin calculator with historical data

[speciall]

Hi,
 is there somewhere a calculator or spreadsheet available so you can calculate the profit you made with the miner(s) you already have?

for example, in juni I purchased 20 USB erupters @ 0.5btc each, or at 75 euro each,
they have mined since then, what is my profit made with them.? (calculation with the known difficulties)

Is there a calculator that calculates historical profit and not only expected profit?

[theecoinomist]

I would post this in the mining section..

[andy48]

I've been looking for this too. My ASIC is being hosted. I have no idea how to confirm what is being paid to me is anywhere around where it should be.

Please let me know where this thread carries to.