Win Probability Calculator

A win probability calculator estimates the likelihood of winning based on team or player ratings, historical data, or Elo-style scores. Used in sports analytics and betting markets

The calculator uses the standard published formula for win probability. Results are accurate to the precision of the inputs you provide. For financial, medical, or legal decisions, always verify with a qualified professional.

This calculator works with inches. You can enter values in the units shown — the calculator handles all conversions internally.

The core formula is: Simple: P(win) = Team strength / (Team strength + Opponent strength). Each step in the calculation is shown so you can verify the result manually.