The best sports betting tools each answer one question before you bet: what a price means, what it pays, how much margin sits inside it, and whether it is worth taking. Every BettorEdge calculator is free and needs no signup, and the full set lives on the tools page. This guide says what each one answers, then runs one ordinary bet through several of them so you can see where each tool fits.
Why one bet needs more than one tool
A price like -110 carries several facts at once. It has a payout, an implied win rate, a share of margin, and a fair version with that margin removed. Each calculator is built around one of those questions, so knowing which question you are asking is most of the skill.
A worked example: one -110 bet, checked five ways
Take a standard spread bet with both sides priced at -110, and suppose you think the game is a true coin flip.
- Payout. The Betting Calculator shows a $110 stake wins $100 and returns $210.
- Implied chance. The Odds Converter turns -110 into 52.38%, which is also the win rate you need to break even.
- Margin. Both sides together imply 104.76%. The Vig Calculator reads that as 4.76% vig, and the Hold Calculator as a 4.55% hold.
- Fair price. The No-Vig Calculator strips the margin and returns 50% each side, or +100.
- Value. At a true 50%, the Expected Value Calculator shows the bet loses $5 on average per $110 staked, the same 4.55% as the hold.
Now string three of those -110 legs into a parlay. The Parlay Calculator prices it at +596. If each leg really is 50%, the parlay hits 12.5% of the time, which is a fair price of +700. At +596 that is an expected loss of about $13 per $100.
The gold line marks a true coin flip. The blue overshoot is the margin, and it compounds: three legs pay +596 against a fair +700.
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Odds and payout tools
- Odds Converter: what is this price in American, decimal and fractional, and as a win percentage?
- Implied Probability Calculator: what chance of winning does this price assume?
- Betting Calculator: what do I profit on this stake at these odds?
- Bet Winnings Calculator: what comes back in total, stake included?
- Moneyline Calculator: what does a moneyline pay, and what win probability does it carry?
- Prediction Market Calculator: what does a contract price mean as a probability and as American odds?
Vig and fair price tools
- Vig Calculator: how much margin is baked into this market?
- Hold Calculator: what share of every dollar wagered does the house keep?
- No-Vig Calculator: what are the fair odds once the margin is gone?
Value and edge tools
- Expected Value Calculator: does this bet make or lose money on average at my estimate?
- Closing Line Value Calculator: did I beat the closing line, and by how much?
- Win Probability Calculator: what chance does a point spread give each team to win outright?
- Spread to Moneyline Calculator: what fair moneyline matches this spread, and the reverse?
- Poisson Calculator: what do expected goals say about the 1X2, the total, both teams to score and exact scores?
Line shopping and spread tools
- Compare Lines Calculator: two spreads at two prices, which one is actually better?
- Half Point Calculator: is buying this half point worth the extra juice?
- Alternate Lines Calculator: is this alternate spread or total a fair price?
- Teaser Calculator: does my teaser cross the key numbers that make it worth it?
- Market Making Calculator: what two-sided quotes should I post from a fair line plus a margin?
Hedges, arbitrage and middles
- Hedge Betting Calculator: what stake locks the same profit whichever side lands?
- Arbitrage Calculator: how do I split stakes across two prices for a guaranteed profit?
- Middle Calculator: what do two overlapping bets pay if the result lands in the gap?
- Middle Probability Calculator: how often does that middle hit, and is it +EV?
Parlays, bankroll and pools
- Parlay Calculator: what does this parlay pay, and how often does it really hit?
- Round Robin Calculator: what is the total stake and payout across every smaller parlay?
- Bankroll Calculator: how big should one unit be, and what stake does Kelly suggest?
- Calcutta Value Calculator: what is a team worth in a Calcutta auction before I bid?
Tracking your bets
Calculators judge one bet. A sports betting tracker judges all of them, which is the only way to learn whether your estimates beat the prices you took. If you want a spreadsheet, the free bet tracking template logs every wager and works out ROI, units and win rate by sport. If you would rather use an app, the bet tracking apps roundup covers that side. Bets placed on BettorEdge are logged and graded automatically.
Betting tools for beginners: where to start
Start with three. The Odds Converter teaches you to read any price as a percentage. The Betting Calculator shows what a stake pays before you commit it. The No-Vig Calculator shows what a fair price looks like, which is the number every other tool compares against. Add the Expected Value Calculator once you start forming your own estimates.
Free sports betting tools FAQ
What are the best sports betting tools?
The best sports betting tools are an odds converter, a betting calculator, a no-vig calculator, an expected value calculator and a parlay calculator, because together they tell you what a price means, what it pays, what the fair price is and whether the bet is worth it. A bet tracker completes the set by showing whether your bets win over time. Every BettorEdge calculator is free and needs no signup.
Are these sports betting calculators free?
Yes, every BettorEdge sports betting calculator is free to use and needs no signup or account. The full list sits on the BettorEdge tools page, grouped by the question each one answers.
What does -110 mean as a percentage?
-110 means an implied win probability of 52.38%, which is also the win rate a bet at that price needs to break even. When both sides of a market sit at -110 they add up to 104.76%, so the market carries 4.76% vig, and removing it leaves a fair price of +100, or 50% each side.
The math is free, and it points the same way every time: the less margin on a price, the more of your edge you keep. On BettorEdge community odds you bet against other people with no vig sitting on top. Open BettorEdge and get this price for real, peer-to-peer.
Run your pool on BettorEdge.
Brackets, calcuttas, survivor pools and leaderboards, all in one place. Start a competition with your group and track it live on BettorEdge.