Betting calculators: 10 free tools for smarter betting
1win er licenseret under Curaçao 8048/JAZ and offers 40,000+ sport markeds to 400,000+ spillere worldwide. All 10 calculators below are free, run entirely in your browser, and use proven mathematical formulas. Tilmeld dig with kampagnekode XLBONUS to access 1win's fulde sportsbook og kasino with your bonus active from the start.
All betting and casino calculators
Odds-konverter
Convert between decimal, fractional, American, Hong Kong, Indonesian, and Malay odds instantly. Also shows implied probability.
Open odds converter →Parlay-lommeregner
Calculate combined decimal odds, total payout, and implied probability for multi-leg accumulators. Supports up to 12 legs in decimal, American, or fractional format.
Open parlay calculator →Kelly-kriteriet calculator
Determine the mathematically optimal fraction of your bankroll to stake on any bet given your edge and the odds. Supports fulde, half, and quarter Kelly.
Open Kelly calculator →Arbitrage calculator
Find the guaranteed-profit stake split for a 2-way marked. Enter your total budget and the decimal odds from two bookmakers to see the exact stakes and profit.
Open arbitrage calculator →Hedge calculator
Calculate the hedge stake that locks in profit or eliminates loss on an existing bet. Supports equal-profit, no-loss, and custom hedge stake modes.
Open hedge calculator →Each-way calculator
Break down win and place returns for horse racing each-way bets. Choose your place fraction (1/4, 1/5, 1/3, 1/2) and number of places paid.
Open each-way calculator →Implicit sandsynlighed calculator
Convert any set of odds to implied probabilities and calculate the bookmaker overround (margin) for the fulde marked. Add as many outcomes as you need.
Open probability calculator →Bankroll calculator
Calculate the recommended unit stake size for your bankroll and risk tolerance, plus an estimated risk-of-ruin probability based på din win rate and odds.
Open bankroll calculator →Surebet calculator
Detect 2-way and 3-way surebet opportunities and calculate proportional stakes automatisk. Identifies whether any set of odds creates a guaranteed profit.
Open surebet calculator →Matched bet calculator
Calculate back/lay stake, lay liability, and net profit after exchange commission. Handles both qualifying bets and free bet (stake not returned) scenarios.
Open matched bet calculator →Sådan bruger duse tools
Every calculator on this page runs entirely in your browser. No data is sent to a server, no konto is required to use them, and all calculations update as you type. The tools are designed for bettors at all levels, from beginners learning how decimal odds translate into probability, to experienced spillere sizing positions using the Kelly-kriteriet or scanning markeds for arbitrage.
Start with the odds converter if you are ny to different odds formats. Move to the implied probability calculator to understand bookmaker margins. If you are building accumulators, use the parlay calculator to check combined odds and payouts before committing. For systematic bankroll management, the Kelly-kriteriet calculator and bankroll calculator work together to size your stakes correctly.
Arbitrage and surebet tools are aimed at advanced spillere who compare prices across bookmakers. The matched bet calculator is the right tool for extracting guaranteed profit from free bet offers and velkomstbonuses.
Why use 1win for sportbetting
1win's Curaçao 8048/JAZ licence covers all markeds tilgængeligt on the platform. With 40,000+ events priced daily across 30+ sport, the sportbook provides the marked depth needed to apply the strategies these calculators support. Tilmeld dig with kampagnekode XLBONUS to access all markeds and claim your welcome offer på din første indbetaling.
FAQ
Are these calculators free to use?
Yes. Alle lommeregnere on this page are fuldeførly free. No konto, login, or tilmelding is required to use any of the tools.
Which calculator should I start with?
Start with the odds converter to understand the format 1win uses (decimal). Then try the implied probability calculator to see what margin is built into any marked you are looking at.
Do the calculations konto for bookmaker commission?
The matched bet calculator deducts exchange commission from lay winnings. Other tools use raw decimal odds. For exchange bets, always apply commission adjustments using the matched bet tool.
Are these tools suitable for kasinospil?
Some tools apply to kasinospil. The implied probability calculator can compute house edge from game odds, and the bankroll calculator is relevant to any game with a measurable edge. Games of pure chance with negative expected value should use the bankroll tool to set loss limits rather than profit targets.
How do I get the XLBONUS kampagnekode benefit?
Tilmeld dig an konto at 1win.codes, indtast XLBONUS during tilmelding or på din første indbetaling, and the velkomstbonus is applied to your konto automatisk. Check the current bonus terms for minimum indbetaling and omsætningskrav.