Betting
Bet Calculator
Returns for 19 bet types: singles and accumulators up to 8-fold, plus Trixie, Patent, Yankee, Lucky 15, Canadian, Lucky 31, Heinz, Lucky 63, Super Heinz and Goliath, with each-way, void and place-only selections.
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Interactive calculators to help you make smarter decisions. All tools run entirely in your browser — no data is sent or stored.
Casino
Wagering Requirements Calculator
The true cost of any casino bonus: stakes required, expected loss at your game RTP, game contribution and the break-even wagering multiplier.
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Casino Bonus EV Calculator
Is the bonus worth taking? Expected value after the house edge on the turnover it demands, the break-even wagering multiplier, and the ceiling a withdrawal cap sets.
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Odds Converter
Convert between decimal, fractional and American odds instantly. See implied probability, payout and the traditional fraction a UK bookmaker displays.
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Each-Way Calculator
Win and place returns on any each-way bet at 1/2, 1/3, 1/4 or 1/5 terms — including the odds above which placing alone covers the whole outlay.
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Dead Heat Calculator
Two runners tie and your stake is cut, not your price. Win and each-way settlement, the odds a tied bet needs just to break even, and what the reduction is worth in Rule 4 terms.
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Rule 4 Calculator
What a non-runner costs your bet. The full Tattersalls deduction scale, two withdrawals with the 90p cap, and the price you effectively ended up with.
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Accumulator Calculator
Combined odds, returns and profit for accas of 2-14 selections, with optional acca boost. See exactly what your multiple pays.
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Yankee Calculator
All 11 bets on four selections — 6 doubles, 4 trebles and a four-fold, no singles — with the combined price two winners need to return the outlay.
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Lucky 15 Calculator
All 15 bets on four selections — 4 singles, 6 doubles, 4 trebles and a four-fold — with returns for any mix of winners.
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Canadian Calculator
All 26 bets on five selections — 10 doubles, 10 trebles, 5 four-folds and a five-fold, no singles — with the combined price two winners need to return the outlay.
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Lucky 31 Calculator
All 31 bets on five selections, with the double-odds consolation and 10% all-win bonus settled the way a UK bookmaker settles them.
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Patent Calculator
All 7 bets on three selections — 3 singles, 3 doubles and a treble — with returns and profit for any mix of winners.
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Trixie Calculator
All 4 bets on three selections — 3 doubles and a treble, no singles — with returns and profit for any mix of winners.
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Free Bet Calculator
What is a free bet really worth? Returns and conversion rate for stake-not-returned and stake-returned free bets at any odds.
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Bookmaker Margin Calculator
How much edge is priced into a market? Margin, payout percentage and fair odds for any 2-way or 3-way market from its decimal odds.
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Lucky 63 Calculator
All 63 bets on six selections, with the single-winner consolation, the all-win bonus and the price at which the six singles stop beating a Heinz.
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Heinz Calculator
All 57 bets on six selections, with the price two winners need to repay the outlay and the crossover where the Lucky 63 singles stop paying.
Open tool →More tools are coming soon. All calculators are free, run client-side, and require no registration.