Sports Betting Calculators
Free tools to help you calculate odds, payouts, and make smarter betting decisions
Parlay Calculator
Calculate combined parlay odds and potential payouts for 2-15 legs. See your implied probability of winning.
Odds Converter
Convert between American, Decimal, and Fractional odds formats instantly. See implied probability for any odds.
Hedge Calculator
Calculate the perfect hedge bet to guarantee profit. Includes modes for guaranteed profit, target profit, and free bet conversion.
Implied Probability Calculator
Convert odds to win probability and probability back to fair odds. Essential for finding value bets.
EV Calculator
Calculate expected value to determine if a bet is profitable long-term based on your probability estimates.
Kelly Calculator
Determine optimal bet sizing using the Kelly Criterion based on your edge and bankroll.
Vig Calculator
Calculate the bookmaker's margin (vig/juice) and find no-vig fair odds. Compare sportsbook value.
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Why Use Betting Calculators?
Make Informed Decisions
Betting calculators remove the guesswork and help you understand exactly what you're betting on. Know your potential payouts, implied probabilities, and expected value before placing any wager.
Manage Risk
Tools like the hedge calculator and Kelly criterion help you manage risk effectively. Lock in guaranteed profits, size your bets optimally, and protect your bankroll from catastrophic losses.
Find Value
The vig calculator and implied probability tools help you identify when odds offer value. Compare your probability estimates to the market and bet when you have an edge.
How to Use These Calculators
Step 1: Understand Your Goal
Different calculators serve different purposes. Use the Parlay Calculator to see potential payouts on multi-leg bets. Use the EV Calculator to determine if a bet is +EV. Use the Hedge Calculator to lock in profits on existing bets.
Step 2: Enter Your Data
Input the odds from your sportsbook (in American or Decimal format), your stake amount, and any other required information. All calculators support common odds formats and provide instant results.
Step 3: Analyze and Act
Review the calculated results. Consider whether the bet meets your criteria for expected value, risk tolerance, and bankroll management. Use the insights to make a more informed betting decision.
Recommended Tool Workflows
Finding Value Bets
A workflow for identifying and sizing +EV opportunities
Vig Calculator: Check the bookmaker's margin on the market
Implied Probability: Convert odds to probability and compare to your estimate
EV Calculator: Confirm the bet has positive expected value
Kelly Calculator: Determine optimal bet size based on your edge
Converting Promotions to Cash
A workflow for maximizing free bet and bonus value
Odds Converter: Find the best odds for your free bet (look for high underdogs)
Hedge Calculator: Calculate the hedge bet to guarantee cash
Place both bets and collect your guaranteed conversion