Betting calculators
Ten free calculators, each with the formula, a worked football example and an honest note on what it cannot tell you.
Bet calculatorReturns for singles, accumulators, each-way and system bets from a Trixie to a Goliath.Odds converterDecimal, fractional, American and the Asian formats, with the chance each price implies.Implied probability calculatorThe chance each price implies, the bookmaker’s margin and the fair odds without it.Kelly criterion calculatorThe stake that grows a bankroll fastest, at full, half or quarter Kelly.Arbitrage calculatorWhether prices from different bookmakers make an arbitrage, and the stake on each outcome.Dutching calculatorOne stake across several picks, so any winner returns the same profit.Each-way calculatorWhat an each-way bet returns if it wins, places or loses, with Rule 4.Matched betting calculatorThe lay stake that levels a back bet, for qualifying bets and free bets.Expected value calculatorWhat a bet makes on average, its edge, and the swing over many bets.Hedge calculatorThe stake that locks a result either way, and what a cash-out offer gives away.
Learn the terms
Every calculator can be embedded on another site for free, with no tracking: the code is at the foot of each calculator’s page.