BonusFinder's free betting and casino calculators help you bet and play smarter. Convert odds, size your stakes, work out what a bonus is really worth, and plan your bankroll, all in one place. Pick a tool below to get started, and check back as we add new calculators.
BonusFinder Jackpot Planner
Calculates how long a jackpot can sustain your lifestyle or how big a jackpot you need for your desired income, with yearly, monthly, and weekly breakdowns, plus guidance on winnings tax and lump sum vs annuity.
BonusFinder Odds Calculator
Sports betting odds can be confusing. This odds calculator and parlay calculator converts American, fractional, and decimal odds instantly and shows your implied probability, profit, and total return.
BonusFinder MatchMaker
Discover the best casino bonuses for your playing style. Answer 5 quick questions and get personalized bonus recommendations in under 60 seconds.
BonusFinder Slot Bankroll Planner
Plan your slot session: set your budget, session length, and spin pace to get a safe stake range. Includes a timer, volatility selector, and bankroll management tips.
Kelly Criterion Calculator
Work out the optimal amount of your bankroll to stake using the Kelly Criterion formula. Enter your bankroll, the odds, and your win probability, and adjust the Kelly multiplier for full, half, or quarter Kelly.
Casino Bonus EV Calculator
Find out what a casino bonus is really worth. Enter the bonus amount, deposit, wagering requirement, and game RTP to calculate the expected value and see whether an offer is worth claiming.
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