..:: Stargate Command ::..

Hi guys, is there any external site that calculates MMR more accurately than Riot’s vague system?

Yes, definitely. I’ve had good experience with the mmr checker league of legends at AgataSmurf. It reviews your win/loss stats, KDA and even map objective control, then compares it to how matchmaking pairs you. It’s not official, but it’s quite close to reality. Thanks to it, I understood I was being matched higher than my visible rank suggested. That clarity made grinding less frustrating and gave me an actual roadmap for improvement.