Betting calculators: 10 free tools for smarter betting
1win is licenciado under Curaçao 8048/JAZ and offers 40,000+ sports mercados to 400,000+ players worldwide. All 10 calculators below are free, run entirely in your browser, and use proven mathematical formulas. Register with código promocional XLBONUS to access 1win's full sportsbook and casino with your bonus active from the start.
All betting and casino calculators
Conversor de cotas
Convert between decimal, fractional, American, Hong Kong, Indonesian, and Malay cotas instantly. Also shows implied probability.
Open cotas converter →Calculadora de parlay
Calculate combined decimal cotas, total payout, and implied probability for multi-leg acumuladors. Supports up to 12 legs in decimal, American, or fractional format.
Open parlay calculator →Kelly criterion calculator
Determine the mathematically optimal fraction of your bankroll to stake on any bet given your edge and the cotas. Supports full, half, and quarter Kelly.
Open Kelly calculator →Arbitrage calculator
Find the guaranteed-profit stake split for a 2-way market. Enter your total budget and the decimal cotas 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 →Implied probability calculator
Convert any set of cotas to implied probabilities and calculate the bookmaker overround (margin) for the full market. 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 on your win rate and cotas.
Open bankroll calculator →Surebet calculator
Detect 2-way and 3-way surebet opportunities and calculate proportional stakes automatically. Identifies whether any set of cotas 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 →How to use these tools
Every calculator on this page runs entirely in your browser. No data is sent to a server, no account 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 cotas translate into probability, to experienced players sizing positions using the Kelly criterion or scanning mercados for arbitrage.
Start with the cotas converter if you are new to different cotas formats. Move to the implied probability calculator to understand bookmaker margins. If you are building acumuladors, use the parlay calculator to check combined cotas and payouts before committing. For systematic bankroll management, the Kelly criterion calculator and bankroll calculator work together to size your stakes correctly.
Arbitrage and surebet tools are aimed at advanced players who compare prices across bookmakers. The matched bet calculator is the right tool for extracting guaranteed profit from free bet offers and bono de benvidaes.
Why use 1win for apostas deportivas
1win's Curaçao 8048/JAZ licenza covers all mercados available on the platform. With 40,000+ events priced daily across 30+ sports, the sportsbook provides the market depth needed to apply the strategies these calculators support. Register with código promocional XLBONUS to access all mercados and claim your welcome offer on your primeiro depósito.
Preguntas frecuentes
Are these calculators free to use?
Yes. All calculators on this page are completely free. No account, login, or rexistro is required to use any of the tools.
Which calculator should I start with?
Start with the cotas converter to understand the format 1win uses (decimal). Then try the implied probability calculator to see what margin is built into any market you are looking at.
Do the calculations account for bookmaker commission?
The matched bet calculator deducts exchange commission from lay winnings. Other tools use raw decimal cotas. For exchange bets, always apply commission adjustments using the matched bet tool.
Are these tools suitable for xogos de casino?
Some tools apply to xogos de casino. The implied probability calculator can compute house edge from game cotas, 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 código promocional benefit?
Register an account at 1win.codes, enter XLBONUS during rexistro or on your primeiro depósito, and the bono de benvida is applied to your account automatically. Check the current termos do bono for minimum deposit and requisitos de aposta.