Enter your back bet and the exchange lay odds. We'll give you the lay stake that locks in the same result whichever way the bet goes, your liability, and the guaranteed profit.
Backing every outcome across different bookies to guarantee the same return. Enter the best back odds for each outcome and your total stake — we'll split it so every result pays the same.
Dutching guarantees a return only when the outcomes are mutually exclusive and cover every result. A profit here (odds imply <100%) is an arb — great for one-off value, but repeated arbing gets accounts restricted faster than qualifying-loss matched betting.
Convert between fractional, decimal and implied probability. Type into any field and the others update.
Implied probability is 1 ÷ decimal odds. The bookies' margin ("overround") is why every market's implied probabilities add up to more than 100%.
Ready for live prices? The Odds Matcher does this maths for you against real-time bookie and exchange odds.