Free calculators for working out payouts, converting odds and planning your bets. Every tool runs in your browser, updates as you type and lets you save or share a result with a link. There’s nothing to download and no sign-up.
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Parlays, teasers, round robins and straight bets on every major sport.
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Which tool do you need?
Building a multi-leg ticket? The parlay calculator shows what an all-or-nothing parlay pays. If you’d rather not lose everything on one pick, the round robin calculator splits the same picks into smaller parlays and shows what you get back for each number of winners.
Moving the spread in your favor? The teaser calculator prices 6, 6.5 and 7-point football teasers and 4 to 5-point basketball teasers, and shows the win rate each team needs.
Holding a bet that’s moved your way? The hedge calculator tells you how much to put on the other side to lock in a profit or get your stake back.
Seeing a price in a format you don’t use? The odds converter turns American, decimal and fractional odds into each other and into the implied probability, which is the win rate you need to break even.
Learn the math behind the tools
- How to read betting odds
- Vig and juice explained
- Parlays, teasers and round robins
- Hedging basics
- Arbitrage and middling explained
- Bankroll management
Browse every guide in our betting guides section.
Find a price to use
The tools work best with a real line. Start with today’s NFL odds, college football odds, NBA odds or MLB odds, or see odds for every sport.
Responsible gaming: These tools show what a bet pays, not whether it will win. Only wager what you can afford to lose. If gambling stops being fun, see our responsible gaming resources or contact the National Council on Problem Gambling.