Precise, private calculators that run entirely in your browser. No sign-up, no tracking — just the numbers you need before you bet.
Convert between decimal, fractional and American odds, see implied probability and calculate returns for any stake.
Sample: 2.50 decimal is 3/2 fractional, +150 American and a 40.0% implied chance.
Work out total wagering, expected loss and the true expected value of any casino bonus before you claim it.
Sample: a $100 bonus at 30x needs $3,000 of bets; on average that costs $120 at 96% RTP.
Work out the expected value of free spins from the number of spins, spin value, RTP and wagering on the winnings.
Open free spins calculatorWork out the average hourly cost of playing a slot, for budgeting.
Open slot cost calculatorWork out the returns and value of a stake-not-returned or stake-returned free bet.
Open free bet calculatorWork out the returns for singles, doubles, trebles and accumulators, with each-way and the combined bookmaker margin.
Open bet calculatorWork out the terms of any casino bonus, read from the text you paste into match, wagering, max bet, expiry and caps, then valued.
Open bonus terms checkerLook up the published return and house edge of a video poker pay table from its full house and flush payouts.
Open video poker pay tablesSet deposit limits before you play, never chase losses and take regular breaks. If gambling stops being enjoyable, free and confidential help is available 24/7.