Sports Betting
Calculators
Professional sports betting tools to maximize value and minimize risk. Calculate parlay odds, find arbitrage opportunities, manage your bankroll like a pro, and analyze betting strategies with mathematical precision.
Sports Betting Tools
Professional calculators for smart sports betting
Parlay Calculator
Calculate parlay and accumulator odds for multiple bets. Supports Decimal, American, and Fractional odds. Shows combined odds and implied probability.
Arbitrage Calculator
Find guaranteed profit opportunities across different bookmakers. Calculate optimal stake distribution for risk-free betting arbitrage.
Round Robin Calculator
Generate all possible parlay combinations from your selections. Calculate 2-team, 3-team, 4-team, and 5-team parlays with total stakes and returns.
Unit Calculator & Tracker
Define betting unit size based on bankroll. Track units won/lost and measure performance like professional bettors. Includes bet history.
Trixie Calculator
3 selections, 4 bets. Calculate returns for 3 doubles + 1 treble. Need at least 2 winners to profit from this popular system bet.
Patent Calculator
3 selections, 7 bets. Includes 3 singles + 3 doubles + 1 treble. Guaranteed returns with just 1 winner. Safer than Trixie bet.
Yankee Calculator
4 selections, 11 bets. Includes 6 doubles + 4 trebles + 1 four-fold. Popular system bet requiring minimum 2 winners to profit.
Lucky 15 Calculator
4 selections, 15 bets. Includes 4 singles + 6 doubles + 4 trebles + 1 four-fold. Guaranteed returns with just 1 winner.
Lucky 31 Calculator
5 selections, 31 bets. Full coverage system bet including singles, doubles, trebles, four-folds, and one five-fold accumulator.
Heinz Calculator
6 selections, 57 bets. NO singles. Includes 15 doubles + 20 trebles + 15 four-folds + 6 five-folds + 1 six-fold. Requires minimum 2 winners.
Lucky 63 Calculator
6 selections, 63 bets. Full coverage including singles. Guaranteed returns with just 1 winner. Popular comprehensive system bet.
Super Heinz Calculator
7 selections, 120 bets. NO singles. Massive system bet for serious bettors. Requires minimum 2 winners to get any return.
Goliath Calculator
8 selections, 247 bets. The ultimate system bet. NO singles. Includes 28 doubles + 56 trebles + 70 four-folds + more. For expert bettors only.
Kelly Criterion Calculator
Calculate optimal bet size using the Kelly Criterion formula. Supports fractional Kelly, edge calculations, and expected growth rates for smart bankroll management.
Sports Hedging Calculator
Calculate optimal hedge bets to lock in profits or minimize losses. Multi-leg parlay hedging, arbitrage opportunities, and guaranteed profit calculations.
How Sports Betting Tools Help
Bet smarter with data-driven decisions
Calculate True Odds
Understand the implied probability of your bets. Convert between American, Decimal, and Fractional odds instantly.
Find Value Bets
Identify arbitrage opportunities and positive expected value bets across multiple bookmakers for guaranteed profits.
Manage Your Bankroll
Use proven strategies like Kelly Criterion to determine optimal bet sizing and protect your bankroll from ruin.
Sports Betting Calculator Features
Multiple Odds Formats
Support for American, Decimal, and Fractional odds. Instantly convert between formats and see implied probabilities.
Parlay Calculations
Calculate exact payouts for 2-leg to 15-leg parlays. See combined odds, total payout, and win probability.
Arbitrage Detection
Find sure bets where you can profit regardless of outcome. Calculate exact stakes for each side to guarantee returns.
Bankroll Protection
Calculate optimal bet sizes using Kelly Criterion and other proven strategies. Understand your risk of ruin.
Understanding Sports Betting Mathematics
Implied Probability
Every set of odds has an implied probability - the bookmaker's assessment of how likely an outcome is to occur. For example, odds of +200 (3.00 decimal) imply a 33.3% probability. Understanding implied probability helps you identify when bookmakers have mispriced an event.
Expected Value (EV)
Positive Expected Value (+EV) bets are the foundation of profitable sports betting. A +EV bet occurs when the true probability of an outcome is higher than the implied probability from the odds. Our calculators help you identify these opportunities.
Kelly Criterion
The Kelly Criterion is a mathematical formula for determining optimal bet size based on your edge and bankroll. It maximizes long-term growth while minimizing risk of ruin. Most professional bettors use fractional Kelly (often 25-50% of the full Kelly bet) for bankroll safety.
Arbitrage Betting
Arbitrage (or "sure betting") occurs when you can bet on all possible outcomes of an event across different bookmakers and guarantee a profit regardless of the result. This happens when bookmakers disagree on probabilities, creating inefficiencies in the market.
Sports Betting Tips
Never Chase Losses
Stick to your bankroll management plan even during losing streaks. Variance is normal in sports betting.
Track Your Bets
Keep detailed records of all bets including odds, stake, and reasoning. This helps identify profitable strategies.
Specialize
Focus on specific sports or leagues where you have deep knowledge. Expertise creates edge over bookmakers.
Shop for Lines
Have accounts at multiple bookmakers. Even small differences in odds compound to significant profits over time.
Think Long-Term
Successful sports betting is a marathon, not a sprint. Focus on making +EV bets and let the math work over time.
Avoid Parlays
While exciting, parlays compound the house edge. Straight bets typically offer better long-term value.