looked at different setups surprised to see how u guys overcome on the electricity cost, currently im having 2-S1 and 6 GAW furys in one farm and they are not comfortable with the microwave so need to turn them off before heating up things 
my question is how to calculate electricity cost for the farm which includes multiple asics and GPU miners? and compare it with the mining profit?
my question is how to calculate electricity cost for the farm which includes multiple asics and GPU miners? and compare it with the mining profit?
You would calculate based on watts used and electricity cost. Farms at this point would be Asic's, GPU's are pretty much over as far making much money. You can use a kill-a-watt to get the actual usage. But there are calculators to times it with rate and get full month cost.
In a farm you would also have overhead, heat extraction, etc. You have to find a formula to make sure you cover all this if you were running a farm.
well thanks for such a detailed reply but i just wanted to get 2 points which are highlighted in your reply
GPU mining is only good for a small number of altcoins, and not very profitable (even if you run X11/x13)
kill-a-watt is a device that you plug in between the outlet and your system to find the power consumption.