There are calculators but online but all of them are for now, not for the reward in like next 5 months of mining.
Great Readings for you
HERE 
I DONT UNDERSTAND WHY NEWBIES KEEP ASKING THE SAME QUESTION " ITS TO LATE TO START MINING , IT IS STILL PROFITABLE ? WHY MY EARNING IS LESS THAN ALL THOSE ONLINE CALCULATORS TELLING ME"
No one can tell you !
Do your own research !
No one can tell you for sure what's going to happen with cryptocurrency !
No one can tell you it's going to be profitable for you or not !
No one can tell you how much profit you going to be able to make ! ( if you can make any at all )
No one can tell you the ROI ( return of investment) time !
None of those calculators you are seeing on the web can tell you what's coming tomorrow , months later or 6 months later !
Those calculators telling you about today , at that moment when you typing in your information !
None of those online calculators calculating pool luck