M-Ratio Calculator

Calculate your M-ratio to understand your tournament stack health and adjust your strategy accordingly.

Input Values

Results

Your M-Ratio
66.7
100.0 Big Blinds
Green Zone
Healthy stack - play your normal game
Strategy:
You can play a full range of hands and make standard plays. Focus on value and position.

M-Ratio Zones (Harrington)

Green Zone (M ≥ 20)Normal play
Yellow Zone (10-20)Tighten up
Orange Zone (6-10)Aggressive
Red Zone (1-6)Push/Fold
Dead Zone (< 1)Desperate

What is M-Ratio?

M-ratio (or "M") is a measure of your stack health in tournament poker, developed by Dan Harrington. It represents how many rounds you can survive paying the blinds and antes before going broke.

Formula: M = Your Stack / (Small Blind + Big Blind + Total Antes per Round)