Last Updated: January 2, 2026
Sports Betting Odds Calculator
Learn to Make Smarter Bets — For Educational Purposes Only. Our free calculators help you understand odds conversion, probability, parlays, hedging, and more with 100+ free betting tools.
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All Free Sports Betting Calculators
Explore the tools and concepts used by experienced bettors
Bet Payout Calculator
Calculate how much you'll win based on your stake and odds
Odds Converter
Convert between American, Decimal, and Fractional odds
Implied Probability
See the true win probability behind any odds
Parlay Calculator
Calculate potential parlay payouts for multiple legs
Expected Value (EV)
Determine if a bet has positive or negative expected value
Hedge Calculator
Calculate optimal hedge bets to lock in profit
Arbitrage Finder
Find guaranteed profit opportunities across books
Hold/Vig Calculator
Calculate the sportsbook's edge and no-vig fair odds
Round Robin Calculator
Calculate all parlay combinations for your picks
Teaser Calculator
Calculate NFL/NBA teaser payouts
Breakeven Calculator
Find the win rate needed to break even at given odds
Kelly Criterion
Calculate optimal bet sizing based on edge
ROI Tracker
Track your betting performance and return on investment
Dutching Calculator
Split stakes across multiple selections for equal profit
True Odds Calculator
Remove the vig to find fair market odds
Closing Line Value (CLV)
Measure your edge by comparing to closing odds
Bankroll Growth Projector
Project bankroll growth over time with your edge
Streak Calculator
Calculate probability of winning or losing streaks
Middle Finder
Find middle opportunities between two lines
Win Probability
Convert moneyline odds to win percentages instantly
Market Margin Calculator
Calculate the sportsbook's margin on any market
Free Bet Converter
Convert free bets to guaranteed cash profit
Lay Bet Calculator
Calculate lay stakes and liability for betting exchanges
Cash Out Calculator
Calculate if a cash out offer is worth taking
Unit Size Calculator
Calculate your optimal unit size based on bankroll
Half Point Calculator
Calculate the value of buying half points on spreads
Odds Boost Calculator
Calculate the true value of sportsbook odds boosts
Parlay to Singles
Compare parlay odds vs betting legs individually
Commission Calculator
Calculate exchange commission and net winnings
Poisson Goal Predictor
Predict soccer/hockey scores using Poisson distribution
Z-Score Calculator
Test if your betting results are statistically significant
Monte Carlo Simulator
Simulate thousands of betting scenarios
Correlated Parlay
Adjust parlay odds for correlated outcomes
Spread to Moneyline
Convert point spreads to implied moneyline odds
Alternate Lines Calculator
Calculate fair odds for alternate spreads and totals
Sample Size Calculator
How many bets needed for statistical significance
Confidence Interval
Calculate confidence intervals for your win rate
SGP Correlation
Analyze same-game parlay correlations and fair value
Odds Value Finder
Find the best odds and calculate edge across books
Player Prop EV Calculator
Calculate expected value on player props with historical analysis
Reverse Line Movement
Identify sharp money with RLM analysis
Betting Variance Simulator
Visualize drawdowns and risk of ruin over thousands of scenarios
Elo Rating Calculator
Calculate team power ratings and expected outcomes
Bayesian Probability
Update probabilities with new evidence and information
Regression to Mean
Calculate expected performance reversion
Sharp Action Tracker
Analyze line movement and sharp money indicators
Market Efficiency Tester
Test if betting markets are efficient or exploitable
Live Hedge Calculator
Calculate optimal in-play hedge based on live odds
NFL Weather Impact
Adjust totals/spreads based on wind and temperature
NBA Rest Days Impact
Calculate performance impact from rest and back-to-backs
MLB Park Factors
Adjust totals for ballpark hitting environments
Soccer xG Calculator
Calculate expected goals from shot quality data
NFL Red Zone Efficiency
Analyze team red zone scoring and stop rates
NFL Drive Success Rate
Calculate expected drive outcomes and scoring
NBA Pace Adjuster
Adjust totals based on team pace and possessions
NBA 3PT Variance
Analyze three-point shooting variance and regression
MLB Pitcher Matchup
Analyze pitcher vs lineup handedness splits
MLB Bullpen Fatigue
Calculate bullpen availability and fatigue factors
MLB Umpire Tendencies
Analyze umpire strike zone and over/under trends
NHL Goalie Workload
Calculate goalie fatigue from recent starts and shots
NHL Corsi/Fenwick
Advanced possession metrics and expected goals
Tennis Surface Adjuster
Adjust player ratings for clay, grass, and hard courts
Tennis Head-to-Head
Analyze player matchup history and style factors
Golf Course Fit
Match golfer strengths to course characteristics
Golf Strokes Gained
Analyze strokes gained categories for course fit
UFC Reach Advantage
Calculate reach differential impact on fight odds
MLB Synthetic -1 Run Line
Create a synthetic -1 run line by combining ML and -1.5 RL
Golf Each-Way & Dead Heat
Calculate each-way payouts with dead heat rules
Anytime TD Scorer EV
Calculate EV on NFL anytime touchdown scorer props
NBA Live Total Projector
Project final game totals during live betting
MLB Sabermetrics Calculator
Calculate wOBA, wRC+, FIP, xFIP for advanced baseball betting analysis
NFL EPA & Success Rate
Expected Points Added analysis for NFL game projections
NBA Four Factors
Dean Oliver's Four Factors with pace-adjusted projections
March Madness Bracket Calculator
Calculate NCAA Tournament bracket probabilities and upset rates
March Madness Upset Predictor
Analyze historical upset rates and find Cinderella candidates
March Madness Pool Optimizer
Optimize bracket picks for tournament pools using game theory
UFC Style Matchup
Analyze striker vs grappler matchup dynamics
Odds Boost & Promo Calculator
Calculate true EV of boosts and convert promos to cash value
Units to Dollars Converter
Convert betting units to dollars and track profit standardized
Risk of Ruin Calculator
Calculate probability of losing your bankroll based on edge and unit size
Live Win Probability
Real-time win probability for NFL, NBA, MLB, NHL with live betting EV analysis
Weather Betting Calculator
Quantify weather impact on NFL & MLB totals with specific point adjustments
Prop Derivatives & Correlation
Calculate alternate line fair odds and analyze SGP prop correlations
NFL Weather Dashboard
Team & player performance by weather, O/U trends, prop adjustments
NFL 4th Down Decision
Win probability analysis for go-for-it, punt, or field goal decisions
NFL Drive Efficiency
Points per drive, TD rate, turnover rate analysis by team
NFL PFR Advanced Stats
Explore ANY/A, pressure rate, success rate and win correlations
NFL Game Script Predictor
Predict pass/rush rates based on score and time for live betting edges
Rookie vs Veteran Analyzer
Compare rookie performance to veteran baselines for player props
Contract Year Tracker
Track if contract year players outperform career averages
Backup QB Impact
Calculate spread and total adjustments for backup QB situations
Dome Team Weather
Quantify dome team performance in outdoor bad weather games
Horse Racing Calculators
Exotic bet calculators for horse racing
Exacta Box Calculator
Calculate the cost of boxing horses in an exacta
Trifecta Box Calculator
Calculate trifecta box combinations and cost
Superfecta Box Calculator
Calculate superfecta box combinations and cost
Place & Show Calculator
Calculate place and show payouts from tote prices
Daily Double Calculator
Calculate Daily Double bet combinations
Pick 3 Calculator
Calculate Pick 3 multi-race wager costs
Pick 4 Calculator
Calculate Pick 4 multi-race wager costs
Pick 6 Calculator
Calculate Pick 6 jackpot wager costs
Quinella Calculator
Calculate quinella box cost and combinations
Exacta Wheel Calculator
Calculate exacta wheel combinations and cost
Trifecta Wheel Calculator
Calculate trifecta part wheel and key costs
Racing Odds to Probability
Convert morning line odds to win probabilities
Takeout Calculator
Calculate track takeout and effective odds
Pari-Mutuel Calculator
Estimate payouts based on pool size and odds
Odds Payout Chart - Quick Reference
Use this odds payout chart to quickly see potential winnings on a $100 bet at common American odds:
| American Odds | Decimal Odds | Fractional Odds | Implied Probability | $100 Payout |
|---|---|---|---|---|
| -500 | 1.20 | 1/5 | 83.3% | $120 |
| -200 | 1.50 | 1/2 | 66.7% | $150 |
| -150 | 1.67 | 2/3 | 60.0% | $167 |
| -110 | 1.91 | 10/11 | 52.4% | $191 |
| +100 | 2.00 | 1/1 | 50.0% | $200 |
| +150 | 2.50 | 3/2 | 40.0% | $250 |
| +200 | 3.00 | 2/1 | 33.3% | $300 |
| +300 | 4.00 | 3/1 | 25.0% | $400 |
| +500 | 6.00 | 5/1 | 16.7% | $600 |
| +1000 | 11.00 | 10/1 | 9.1% | $1,100 |
This odds payout chart shows conversions between American, Decimal, and Fractional odds formats. Use our odds converter sports betting tool for custom calculations.
Why Trust Our Calculators?
Our mission: Democratize access to tools that help bettors make better decisions.
10+ Year Industry Experience
Built by the makers of LineStar App, TrackWiz App, and Props Optimizer. Our team has been building professional-grade betting tools since 2014.
Mathematical Rigor
Every calculator uses peer-reviewed formulas: Kelly Criterion, Poisson distributions, Monte Carlo simulations, and Bayesian probability models used by professional bettors.
Data Accuracy & Integrity
We are committed to providing accurate, up-to-date calculations. Our formulas are regularly audited, and we continuously verify outputs against industry standards to ensure you get reliable results every time.
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No hidden fees, no paywalls. We show our work—every formula is documented. We promote responsible gambling and never guarantee wins.
Responsible Gambling
Gambling should be entertaining, not a way to make money. Only bet what you can afford to lose, and never chase your losses. Set limits on time and money spent gambling.
- Betting more than you can afford to lose
- Chasing losses with bigger bets
- Lying to others about gambling habits
- Gambling interfering with work or relationships