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501  Other / Beginners & Help / Re: Calculating Earnings on: July 15, 2012, 10:50:07 AM
Here you go:

Here's the current bitcoin difficulty: http://blockexplorer.com/q/getdifficulty.

I reduced the formula down to: average BTC per Day = (megahashes per second / difficulty) * 1005.82838

so: 100 megahashes/s at 1379223.4296725 difficulty = ( 100 / 1379223.4296725 ) * 1005.82838 = .07292715 BTC per day

Add ~1% in transaction fee wins (if paid by pool), subtract downtime, connectivity issues, and rejected block overhead, and subtract pool fees.

If you join a large pool that solves several blocks a day your results will be very close to this. If you are solo mining with a GPU, it is more like a lottery - although stats say it would average eight months to win 50 BTC at current difficulty with a good ATI GPU, you might win it tomorrow or you might never win in your lifetime.
You know where he is getting 1005.82838 from?
502  Other / Beginners & Help / Calculating Earnings on: July 15, 2012, 10:23:35 AM
I need to figure out how to calculate expected payouts from the difficulty + price + hashrate + timeframe.
I know there is a online calculator, but I need the actual formula so I can do it myself.
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