Betting calculators & tools
Free calculators for the questions that come up on every bet: what the fair price is, whether your odds beat it, how much to stake, and what the swings will look like along the way. No account needed; they work in your odds format.
Fair odds calculator
Strip the margin from any market to see the true odds and real probability of each outcome, and check whether the price you were offered elsewhere beats them.
Expected value (EV) calculator
Is this bet worth taking? Enter your odds and the true chance — or the sharp price you compare against — for the edge, expected profit and break-even win rate.
Kelly criterion calculator
The stake that grows a bankroll fastest for a given edge, with the growth curve that shows why a quarter or half of it is the sensible bet.
Variance simulator
Thousands of possible futures for your edge and staking plan: how often you finish in profit, how deep the drawdowns go and how likely you are to go bust first.
Accumulator calculator
Combined odds, payout and true win chance for up to 20 selections, with void legs, acca boosts and the compounded margin the bookmaker keeps.
Odds converter
Type odds in any format and read them in every other — decimal, American, fractional, implied probability, Hong Kong, Malay and Indonesian — with the payout for your stake.
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