Free Trading Calculators

Calculate the vig (juice) built into any betting line. Find the sportsbook's edge and the true implied probability of any bet.

Calculate teaser bet payouts for NFL and NBA games. Enter your lines, teaser points, and stake to see the adjusted odds and potential payout.

Calculate exactly how much federal and state income tax you owe on your sports betting winnings. See your after-tax profit and whether a W-2G form is required.

Calculate the true cost of any casino bonus offer. Find the total wagering needed, expected loss, and whether the bonus has positive expected value.

Calculate the optimal hedge stake to guarantee a profit from any existing back bet. Enter your back stake, back odds, and hedge odds to instantly lock in a risk-free return.

Split your total stake across 2–4 selections so every winner returns the same profit. Find arbitrage opportunities and calculate exact stakes for Dutch betting.

Calculate the mathematically optimal bet size using the Kelly Criterion formula. Enter your edge and odds to find the ideal fraction of bankroll to wager.

Calculate the expected value (EV) of any bet. Find out if a wager is profitable long-term by comparing your assessed probability against the implied odds.

Convert any betting odds to implied probability instantly. Supports American, decimal, and fractional odds formats.

Remove the sportsbook margin to find the true fair odds. Supports two-way and three-way markets for American odds.

Calculate parlay odds and potential winnings for 2–6 legs. Enter American odds for each selection to see the combined payout instantly.

Calculate acca returns for 2–8 selections. Enter decimal odds for each leg to see combined accumulator odds, total return, and potential profit.

Calculate arbitrage betting stakes for guaranteed profit. Enter decimal odds from two bookmakers to find the optimal stake split and locked-in return.

Calculate matched betting stakes for qualifying bets and free bets. Find the optimal lay stake to minimize qualifying loss and maximize free bet value.

Calculate each-way bet returns for all three scenarios: horse wins, horse places, horse loses. Supports standard place fractions for UK horse racing.

Calculate lay bet liability, profit, and loss for any betting exchange. Enter your lay stake, odds, and commission to see your exact risk and return.

Calculate Lucky 15 returns for any 4 selections. Enter your unit stake and odds, mark your winners, and see the full breakdown of all 15 bets.

Calculate optimal bet sizes with fixed stake, fixed percentage, and Kelly Criterion staking plans. Project bankroll growth over time.

Calculate Martingale betting progression to see required stakes and bankruptcy risk. Understand why the strategy always fails mathematically.

Track your sports betting profitability. Enter your betting record to calculate ROI, win rate, and average profit per bet.

Calculate your actual win rate versus the break-even win rate needed to profit at any given odds. See your edge, ROI, and profit over any betting series.

Calculate each-way bet returns for any horse racing selection. Enter your stake, win odds, and place terms to see returns for win, place, and lose scenarios.

Model football match probabilities using Poisson distribution. Enter expected goals for each team to get 1X2 odds, over/under probabilities, and the most likely scorelines.

Calculate the probability of over or under goals in any football match using expected goals (xG) and the Poisson distribution model. Get fair odds and top scorelines.