Practical casino maths

Casino bonus calculators and comparison tools

Use the three calculators below to translate promotional terms into comparable numbers. Each tool runs locally in the browser and does not send the values you enter anywhere.

Choose a calculator

Casino promotions often put the largest figure first and the conditions later. These tools isolate the rules that have the biggest effect on turnover: the wagering base, game contribution, spin value and any cap on winnings.

How to use the results

Copy the figures from the promotion's current terms rather than from an advertisement alone. A result is only as accurate as the inputs, and casinos can change eligible games, expiry dates, maximum bets and withdrawal conditions. The calculators explain one part of an offer; they do not predict wins or turn gambling into a positive-return activity.

Numbers are not a reason to spend more

Use a calculator to understand an offer that already fits an affordable budget. Do not increase a deposit to reach a cap and do not continue wagering to recover a loss. All gambling outcomes remain uncertain.