Guide: understanding odds
Explainers on odds, probability, margin, dropping odds, over 2.5 and BTTS.
How to convert odds into probability
The formula for turning decimal odds into a percentage probability, worked examples and how the bookmaker margin affects the result.
What is the bookmaker margin?
How the profit bookmakers build into odds is calculated, how it compounds on accumulators and why it matters.
What are dropping odds and why do they matter?
What odds movements mean, how the market probability changes and what to keep in mind when reading dropping odds.
Over 2.5 and both teams to score (BTTS) explained
How the over/under 2.5 probability comes from the market and how the BTTS probability is calculated with a Poisson model.