Free betting calculators
The same maths we use in the ArbVantage dashboard, free to use. No account needed, and nothing you type leaves your browser.
Calculators
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Arbitrage calculator
Split your stake across two or three outcomes so every result pays the same. Commission, rounding and fixed stakes included.
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No-vig calculator
Strip the bookmaker's margin out of a 2-way or 3-way market and see the fair odds, using the multiplicative and power methods.
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Kelly calculator
How much of your bankroll to put on a value bet: full, half, quarter and eighth Kelly, with the expected value of each stake.
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Odds converter
Convert between decimal, fractional and American odds and the probability each one implies.
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Comparisons
Weighing up a service?
Side-by-side comparisons of ArbVantage with other sure-bet and value-bet services: price, features and trial, including where they are ahead.
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ArbVantage vs RebelBetting
Both are prematch sure-bet and value-bet services. Compare pricing tiers, edge caps, refresh speed and trials.
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ArbVantage vs BetBurger
BetBurger covers live betting and hundreds of bookmakers. See what that costs and when a prematch-only service is enough.
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Stop calculating, start finding
Calculators are useful once you have the prices. ArbVantage finds them: a live feed of sure bets and value bets across 25+ bookmakers, with the stakes worked out. Free for 7 days.