Sports Betting Calculators
Professional tools to maximize value. Calculate odds, find arbitrage, manage bankroll, and analyze strategies with precision.
Essential Betting Tools
Parlay Calculator
Calculate combined odds for multiple bets.
Odds Converter
Convert American, Decimal, Fractional odds.
Spread to Moneyline
Convert spreads to estimated odds.
EV Calculator
Find your edge and positive expected value.
Vig Calculator
Calculate bookmaker juice and true odds.
No-Vig Calculator
Remove margin to find fair market prices.
Strategy & Arbitrage
Arbitrage Calculator
Calculate sure bets for guaranteed profit.
Hedging Calculator
Lock in profits by hedging your bets.
Kelly Criterion Calculator
Calculate optimal bet size for smart bankroll management.
Unit Calculator
Track and calculate betting units.
Dutching Calculator
Split stakes for equal profit.
Poisson Distribution
Calculate score probabilities for soccer.
System Bet Calculators
Cricket & Analytics
Baseball Calculators
Batting Average
Calculate batting average (AVG).
ERA Calculator
Earned Run Average for pitchers.
WHIP Calculator
Walks + Hits per Inning Pitched.
Fielding Percentage
Defensive reliability stats.
FIP Calculator
Fielding Independent Pitching.
Magic Number
Pennant race tracker.
OBP Calculator
On-Base Percentage stats.
Slugging %
Calculate hitter power metrics.
OPS Calculator
On-Base Plus Slugging metric.
WAR Calculator
Estimator for Wins Above Replacement.
Basketball Calculators
Running Calculators
Pace Calculator
Calculate speed, time, or distance.
Race Predictor
Predict finish times from 5K to Marathon.
Marathon Pace
Mile & Km splits for 26.2 miles.
Magic Mile
Jeff Galloway\'s race potential tool.
Training Zones
Easy, Threshold, Interval & Rep paces.
VO2 Max Calc
Estimate aerobic capacity from race time.
Split Calculator
Track and lap splits table.
Stride Length
Estimate step distance by height.
Race Improvement
Time savings from weight loss.
Steps to Km
Convert pedometer steps to distance.
Steps to Miles
Convert daily steps to miles.
Cycling Calculators
Bike Speed
Calculate speed from cadence & gears.
Gear Calculator
Gear inches and development.
Bike Pace
Convert between speed and pace.
Bike Size
Find your ideal frame size.
Life Gain
Health benefits of cycling.
Calories Burned
Energy expenditure estimator.
Chain Length
Correct chain link count.
Breakaway Calc
Will the peloton catch?
HR Zones
Training zones & intensity.
Wattage Calc
Power output estimator.
E-Bike Range
Battery distance estimator.
Lube Cost
Cost to run analysis.
Weightlifting Calculators
Watersports Calculators
Fishing Reel Line Capacity
Calculate line capacity for mono, braid, fluoro.
Fish Weight Calculator
Estimate weight from length and girth.
Hull Speed Calculator
Theoretical max speed for displacement boats.
Kiteboarding Calculator
Find the right kite size for wind conditions.
Scuba Weight Calculator
Calculate diving weight requirements.
Swim Time Converter
Convert times between SCY, SCM, LCM.
Windsurfing Calculator
Sail size and board volume recommendations.
Triathlon & Endurance
Triathlon Finishing Time
Estimate finish time from swim, bike, run paces.
Cycling Power Zones
FTP-based power training zones.
DIY Sports Drink
Custom electrolyte drinks with precise ratios.
Heart Rate Zones
Training zones for running, cycling & triathlon.
Race Nutrition
Race day calories, carbs, fluids, sodium.
Triathlon Training
Weekly volume and periodization phases.
Understanding Sports Betting Math
Successful sports betting requires more than just picking winners; it requires understanding the math behind the odds. Our free calculators help you quantify risk, identify value, and manage your bankroll effectively.
Implied Probability
Odds represent probability. +200 implies a 33.3% chance. If you think the true chance is 40%, that's a value bet.
Expected Value (+EV)
+EV betting is the only way to beat the bookies long-term. It means placing bets where the potential payout outweighs the risk.
Frequently Asked Questions
What is a parlay bet?
A parlay bet combines multiple individual wagers into one bet. All selections must win for the parlay to pay out, but the combined odds offer higher potential returns than placing each bet separately.
How does the Kelly Criterion work?
The Kelly Criterion is a mathematical formula that calculates the optimal percentage of your bankroll to wager based on your edge and the odds offered. It maximizes long-term growth while minimizing the risk of ruin.
What is arbitrage betting?
Arbitrage betting (or sure betting) involves placing bets on all possible outcomes of an event across different bookmakers to guarantee a profit regardless of the result.
Are these sports betting calculators free?
Yes, all sports calculators on this page are completely free to use with no registration required.
What is implied probability?
Implied probability converts betting odds into a percentage that represents how likely the bookmaker believes an outcome is to occur.