Betting Calculators
Professional sports betting tools to help you make smarter bets. All calculators are free and work with decimal, fractional, and American odds.
Basic
Essential betting calculators for beginners
Bet Conversion Calculator
e.g., 2.50
Bonus Bet Converter
Convert free bets, risk-free bets, and deposit match bonuses into their real cash value.
Implied Probability Calculator
These odds suggest a % chance of the event occurring, according to the bookmaker's prices (including their margin).
Advanced
Professional tools for experienced bettors
Arbitrage Calculator
Arbitrage betting involves placing proportional bets on all outcomes with different bookmakers to guarantee a profit regardless of the result.
Free Play Value Calculator
Calculate the risk-free real dollar profit that can be obtained from betting and hedging a free play bonus of any size.
Kelly Criterion Calculator
Implied Probability: %
Value Betting Calculator
The Value Betting Calculator helps you determine if a bet has positive expected value (EV) by comparing your estimated probability against the bookmaker's odds. Expected Value represents the average amount you can expect to win or lose per bet over the long term.
Multi-bet
Calculators for combination bets
Parlay Calculator
A parlay bet combines multiple individual bets into one wager. All selections must win for the parlay to pay out, offering higher potential payouts but increased risk.
Round Robin Parlay Calculator
Calculate combinations of parlay bets and their potential payouts.
Risk Management
Tools to protect and manage your bankroll
Analysis
Statistical analysis and probability tools
Bet Simulator Calculator
Simulate betting outcomes with comprehensive statistical analysis including confidence intervals, risk of ruin, and bankroll distribution charts.
Poisson Distribution Calculator
Calculate probabilities of events occurring based on their expected average rate.
Generators
Random number generators for lottery and daily games
Euromillions Generator
LUCKY STARS
Keno Generator
No cards generated yet
Lottery Generator
Click to load official lottery formats
Mega Millions Generator
MEGA BALL
Pick 3 Generator
Position Filters (0-9)
Pick 4 Generator
Position Filters (0-9)
Powerball Generator
POWERBALL
Thunderball Generator
THUNDERBALL
Uk Lotto Generator
Different strategies for number selection across your syndicate pool
General
General purpose betting calculators
Asian Handicap Calculator
Calculate potential outcomes for Asian handicap bets including quarter handicaps, half handicaps, and whole handicaps.
Cash Out Calculator
Determine the optimal timing and value for cashing out your bet. Compare sportsbook cash out offers against fair market value to make informed decisions.
Drawdown Calculator
Analyze your betting bankroll drawdown to understand maximum losses, recovery requirements, and manage risk effectively during losing streaks.
Dutching Calculator
Dutching is a betting strategy where you place proportional bets on multiple outcomes to guarantee the same profit regardless of which outcome occurs. This is particularly useful when you want to back multiple selections in a race or match.
Exchange Calculator
Calculate lay bet liability, or the lay stake needed to "green up" (guarantee equal profit) after backing a selection whose price has since shortened.
Half-Point Calculator
Calculate the value of buying or selling half-points for MLB, NCAAF, NFL, NCAA Basketball and NBA odds and totals.
Horse Racing Calculator
Calculate potential payouts for Win, Place, Show, Exacta, Trifecta, Superfecta, and Quinella bets. Perfect for planning your horse racing betting strategy.
If-Bet Calculator
Calculate the payout and expected value of a straight if-bet chain, where each bet only gets action if every prior bet in the chain wins.
Middle Calculator
Calculate the profit, worst-case cost, and expected value of a middle: two bets on the same game at different lines that can both win.
No Vig Calculator
Market Margin
Over/Under Calculator
Analyze over/under (totals) betting markets, calculate potential payouts, and understand market margins.
Reverse Bet Calculator
Calculate reverse bet outcomes, including maximum win/loss potential and detailed scenario analysis for all possible game results.
Risk of Ruin Calculator
Calculate the probability of losing your entire betting bankroll based on your win rate, odds, and bet sizing strategy. Essential for long-term bankroll survival.
Spread Moneyline Calculator
This comprehensive tool converts between point spreads and moneylines across different sports, using sport-specific algorithms based on historical betting data analysis. Each sport uses specialized formulas tailored to its unique scoring patterns and variance.
Streak Calculator
Calculate the probability of achieving a specific winning streak length within a series of bets.
Teaser Calculator
Calculate the payout, breakeven probability, and expected value of a multi-leg point teaser across 6, 6.5, 7, and 10-point variants.
Unit Size Calculator
Translate your bankroll and risk tolerance into a concrete dollar "unit" - the standard bet size handicappers reference when they call a play a "1-unit" or "3-unit" bet.
Need Help Finding the Right Calculator?
Not sure which calculator to use? Here are some quick recommendations:
Start with Bet Conversion and Implied Probability calculators
Use the Arbitrage and Hedge calculators
Try Parlay and Round Robin calculators