Hello fellow miners,
As you all have noticed the net hash rate increased a lot the last few months, resulting in less mining rewards. Also the block time increases which also results in less ether to us. To my opinion the available online mining calculators do not take these factors into account sufficiently.
I've developed a mining profitability calculator which forecasts the net hash rate and daily ether to miners and thus gives a more reliable profitability calculation. The calculator is still in development and please provide feedback of how it can be improved. Source code of the calculator can be found on github, see left side of the calculator.Profitability calculator