Tools
Free calculators to bet smarter.
Surebet Calculator
Detect risk-free bets and calculate the optimal stake per bookmaker to guarantee profit regardless of the outcome.
Betting Systems Calculator
Calculate the combinations, cost and expected return of a multiple bet system based on the minimum number of correct picks.
Kelly + Expected Value
Calculate whether a bet has real value (+EV) and what percentage of your bankroll you should stake according to the Kelly Criterion.
Odds Converter
Convert odds between decimal (European), fractional (UK) and American (moneyline) formats in real time.
Over/Under Ladder
Calculate profit from a stacked Over/Under market ladder. Manual mode or Optimize mode to find the ideal stake per level.
Bankroll Challenge
Calculate how many steps you need to grow a starting stake to your target at a fixed odds, and how many full attempts your bankroll allows.
Dutching Calculator
Distribute your stake across multiple selections in the same event to get the same return whichever one wins.
CLV Calculator
Calculate the Closing Line Value of your bets to find out if you consistently bet with a real edge over the market.