Betting, DFS & Casino Calculators
Free calculators for prediction market traders, DFS pick'em players, sports bettors, and casino players. Every tool runs entirely in your browser with no account required.
Prediction Markets & Sports Betting
Odds Converter
Convert between American, decimal, fractional, implied probability, and prediction market cents.
Parlay Calculator
Calculate combined odds and payouts for multi-leg parlays across any odds format.
EV Calculator
Find expected value by comparing your estimated probability against the market price.
Fee Calculator
Compare trading fees across Kalshi, Polymarket, Crypto.com, FanDuel, and DraftKings.
Vig Calculator
Calculate the vig (juice) built into a two-way or multi-way market and extract fair odds.
Hedge Calculator
Find the optimal hedge bet size to lock in profit or minimize loss across outcomes.
Arbitrage Calculator
Detect and size arbitrage opportunities across platforms for guaranteed profit.
Kelly Calculator
Determine optimal position size using the Kelly Criterion based on your edge and bankroll.
P&L Calculator
Track profit and loss across positions with support for partial exits and fee adjustments.
Break-Even Calculator
Find the exact probability needed to break even at a given price, including platform fees.
Bankroll Simulator
Simulate bankroll growth over hundreds of bets using Monte Carlo methods and Kelly sizing.
Odds Translator
Paste odds in any format and get a plain-English explanation of what they mean.
Fee-Adjusted Returns
See your real return after all platform fees, deposits, and withdrawals are factored in.
DFS Pick'em
Pick'em Payout Calculator
Calculate exact payouts for PrizePicks, Underdog, Pick6, Sleeper, and FanDuel entries by pick count and entry type.
Flex vs Power Play
Compare Flex vs Power Play, Insured vs Standard. Find the crossover hit rate where all-or-nothing beats insurance.
Pick'em Platform Comparison
Side-by-side comparison of payouts, features, and availability across all major pick'em platforms.
Pick'em EV Calculator
Enter sportsbook odds for each pick to calculate expected value against the platform's payout multiplier.
Special Modes Calculator
Evaluate PrizePicks Demons, Goblins, and Underdog Scorcher entries. Compare boosted multipliers against adjusted hit rates.
Entry Size Optimizer
Find the optimal number of picks and entry type for your hit rate. Ranks every configuration by expected value.
Pick'em Bankroll Calculator
Kelly Criterion sizing for pick'em entries. Get recommended entry size, daily budget, and weekly EV projections.
DFS Classic
Fantasy Scoring Calculator
Calculate exact fantasy points for any stat line across DraftKings, FanDuel, and Yahoo. NFL, NBA, and MLB.
DFS Contest EV Calculator
Calculate expected value of any DFS contest. See rake impact, break-even cash rate, and ROI projections.
DFS Bankroll Calculator
Kelly Criterion sizing for DFS. Get nightly budget, contest-type allocations, and long-term EV projections.
DFS Salary Allocator
Plan roster construction by allocating salary cap across positions. Star vs punt analysis for DK, FD, Yahoo.
DFS Correlation Tool
Interactive correlation matrix for stacking. Position-pair correlations and recommended stack configs for NFL, NBA, MLB.
DFS Variance Simulator
Monte Carlo simulation showing bankroll trajectories. See probability of ruin, drawdowns, and confidence intervals.
Online Casino
Casino Game Comparison
Compare house edge, expected loss, and win probability across blackjack, craps, roulette, baccarat, video poker, and slots.
Expected Loss Calculator
Calculate your expected gambling cost per session with confidence intervals and entertainment cost comparisons.
Craps Calculator
Interactive craps calculator with house edge, true odds, bet builder, and odds maximizer for every bet type.
Blackjack Strategy Calculator
Generate color-coded basic strategy charts for any rule set. Practice mode, house edge calculator, and rule impact breakdown.
Wagering Requirement Calculator
Calculate the true value of casino bonuses after game contribution weighting, house edge, and time to clear.
Responsible Gambling Toolkit
Budget calculator, PGSI self-assessment, session planner with stop-loss and win goals, and help resources.
Lottery
Lottery Payout Calculator
Calculate after-tax take-home for Powerball and Mega Millions. Federal and state tax brackets, cash vs annuity.
Lottery EV Calculator
Calculate expected value per ticket. See breakeven jackpot, co-winner adjustment, and tier-by-tier EV breakdown.
Lottery Odds Calculator
Exact probabilities for every prize tier. Powerball, Mega Millions, or any custom lottery format.
Annuity vs Lump Sum
Compare cash option vs annuity with 30-year payment schedules, investment projections, and tax analysis.
Number Analyzer
Frequency heatmaps, hot/cold numbers, and check your lucky numbers against every historical draw.
Poker
Poker Variance Simulator
Monte Carlo simulation of poker results over thousands of sessions. Visualize upswings, downswings, and bankroll risk.
Poker Tournament ROI Calculator
Calculate tournament ROI, ITM rate, and expected profit per event across different field sizes and buy-in levels.
Poker Rakeback Calculator
Compare rakeback programs across platforms. Model effective rake rates by stake level and monthly volume.
Poker Staking Calculator
Model staking and backing arrangements. Calculate expected returns for both horse and backer across markup and split scenarios.
Poker Bubble Factor Calculator
Calculate ICM bubble factors to determine optimal push/fold ranges near the money in tournaments and sit-and-gos.
Poker Outs Calculator
Count outs, calculate equity, and determine pot odds for any draw situation on flop or turn.