Calculators and labs
Calculators, simulators and trainers that run in your browser. They show arithmetic and models, not predictions, and they store nothing.
Wagering requirement calculator
Enter deposit, bonus and multiplier to see how much you must wager, how many rounds that is and what it costs on average. Runs in your browser.
CalculatorHouse edge cost calculator
Estimate the average cost of a session from stake, rounds and house edge. A theoretical average, not a forecast.
CalculatorBankroll planner
Set a session budget and see how many units it covers at a chosen stake. Nothing is saved.
LabSession simulator
Run hundreds of simulated gambling sessions and see how far results swing around the average cost. A math model in your browser, with simulated money only.
LabStreak lab
Flip coins or spin a European roulette wheel and see what really follows a streak. Test the gambler's fallacy yourself, with no money involved.
LabMartingale simulator
Simulate thousands of Martingale series with a bankroll and a table limit, and see the many small wins and the rare large loss. Simulated money only.
LabBlackjack strategy trainer
Practice basic strategy on random hands and see the average result of every action, calculated by the page. No money, just arithmetic.
LabHi-Lo counting trainer
Practice the Hi-Lo count on a shuffled shoe and find out how hard card counting really is. A mental exercise, not a way to make money.
LabMyth or fact? A gambling quiz
Twelve statements about odds, streaks, bonuses and betting systems. Decide whether each is a myth or a fact and see the math behind the answer.
What they are for
The calculators turn a rule or an offer into numbers you can check: how much a bonus makes you stake, what a session costs on average and how a budget splits into sessions. The labs go one step further and let you watch the mathematics happen: sessions that swing far around an average, streaks that change nothing, a doubling plan that breaks, a blackjack chart calculated from scratch. They use the same formulas as the guides on this site.
Results are theoretical averages and simplified models with simulated money only, and they say nothing about how any real session will go. No tool can predict a session or improve the odds of a game.