Is there any easy pre-made tool that I may use to do calculations for ELO ratings? If not if someone has a detailed breakdown of formulas I will simply draft up my own excel documents. Thanks.

The USCF web site has a "ratings estimator", but I don't know how accurate it is for Elo ratings outside USCF. Are you looking for USCF, FIDE, or some other scale?

--Fromper

1. Chess Calculator for FIDE at Elo - Chess Calculator for FIDE
It calculate all Elo results by the rules of FIDE. Brand new software, designed to be visible, understandable, and easy to use. Free to try.
2.Please find simple explanation of Elo calculation at the following website:
Chess Elo - How Elo rating system works You can find there formulas as well.
3.Please also be advised that different Chess Organizations have a little bit
different approach in Elo calculation. For example, the same chess player
may be rated at the same time 2500 at FIDE, 2600 at USCF, and 3000 at ICC.

Sincerely,
Ihor
Technical Support Manager
The Chess Calculator Team