Tools & Calculators
Interactive tools that do the math for you. Calculators, strategy charts, and trainers paired with our courses and guides.
Available tools
No-Vig Calculator: Find the True Odds
Strip the bookmaker margin from any betting line to reveal the true implied probability and fair odds. Works with 2-way and 3-way markets.
Round Robin Calculator: Every Parlay Combo Calculated
Calculate every possible parlay combination from your selections. See total cost, potential payouts, and how round robin bets provide partial protection.
Hedge Bet Calculator: Lock In Profit or Cut Losses
Calculate the exact hedge stake to guarantee profit or minimize loss on an existing bet. Enter your original bet and the current hedge odds to see your optimal hedge.
House Edge Comparison Chart: Every Casino Game Ranked
Interactive comparison of house edge and RTP for every major casino game. Sort by house edge to find the best and worst odds at a glance.
Expected Value (EV) Calculator for Betting
Calculate the expected value of any bet instantly. Enter your odds and estimated win probability to find out whether a wager is +EV or -EV before you place it.
Gambling & Lottery Tax Calculator: Estimate Your Federal & State Tax
Estimate your federal and state taxes on gambling winnings — lottery, casino, sports betting, and poker. Updated for the 2026 OBBBA tax law changes including the 90% loss deduction cap and new W-2G thresholds.
Wagering Requirement Calculator: Is That Casino Bonus Worth It?
A free wagering requirement calculator that shows the total wagering needed, expected loss, and true value of any casino bonus. Compare how the same bonus plays out across slots, blackjack, and roulette.
Provably Fair Calculator: Verify Any Casino Bet Yourself
A free provably fair verification tool that checks SHA-256 hashes and HMAC-SHA256 game results. Paste any casino's seeds and see the math for yourself — all computation runs in your browser.
Video Poker Trainer: Practice Jacks or Better with Strategy Feedback
A free video poker trainer that deals Jacks or Better hands, checks your hold decisions against optimal strategy, and tracks your accuracy. Learn to play perfectly without risking a cent.
Martingale Calculator: See Why the System Fails
A free Martingale calculator that shows the doubling progression, risk of ruin, and bankroll exhaustion for any starting bet. See exactly how many losses it takes to wipe out your bankroll.
Card Counting Trainer: Practice Hi-Lo with a Free Shoe Simulator
A free card counting trainer that deals cards from a realistic shoe and checks your running count. Practice the Hi-Lo system with configurable decks, speed modes, and accuracy tracking.
Roulette Payout Calculator: Every Bet, Every Variant, Exact Numbers
A free roulette payout calculator for European, American, and French roulette. Select any bet type and wager, see the exact payout, win probability, house edge, and expected loss over multiple spins.
Kelly Criterion Calculator: Optimal Bet Sizing for Any Edge
A free Kelly criterion calculator that computes the mathematically optimal bet size for any edge. Supports American, decimal, and fractional odds with full, half, and quarter Kelly options.
Odds Converter: American, Decimal, Fractional & Implied Probability
A free odds converter that instantly translates between American, decimal, and fractional formats. See the implied probability and $100 payout for any odds in one click.
Odds Payout Calculator: See What Any Bet Pays Instantly
A free odds payout calculator that shows the total payout, profit, and implied probability for any single bet. Supports American, decimal, and fractional odds.
Craps Payout Calculator: Every Bet, Every Payout, Every Edge
A free craps payout calculator covering all bet types — Pass Line, Place, Buy, Field, Hardways, and props. See the exact payout, profit, true odds, and house edge for any wager.
Parlay Calculator: Compute Your Multi-Bet Payout Instantly
A free parlay calculator that computes the combined odds, total payout, profit, and implied win probability for any multi-leg bet. Supports American, decimal, and fractional odds.
Keno Odds Calculator: Exact Probabilities for Every Ticket
A free keno odds calculator that computes the exact probability and expected payout for any ticket size from 1 to 10 spots. Powered by the hypergeometric distribution — the same math casinos use.
Blackjack Basic Strategy Chart: The Optimal Play for Every Hand
An interactive basic strategy chart that shows the mathematically correct play for every blackjack hand. Adjust rules (decks, S17/H17, DAS, surrender) and the chart recalculates instantly.