RTP Data works out the mathematics of casino games in the open: house edge, return to player and the probabilities behind each bet, so you can see what a game costs before you play it.
Chapters
- I. RTP Database: published returns, game by game, each with its source.
- II. House Edge: what every bet costs on average, and why.
- III. Game Math: probabilities worked out step by step.
- IV. Myths: systems and beliefs the numbers do not support.
Check any wager with the roulette odds and house edge calculator.
How figures are checked
Every number is either derived in the text, so you can repeat the calculation, or linked to its source. House edges assume the standard rules we state; change the rules and the number changes.
A promise
No betting system changes the house edge, and we never suggest otherwise.
Funding
RTP Data may show advertising, but it has no affiliate links and takes no money from casinos; see Disclosure.
18+
The site is for adults. Free help is listed on our Responsible Gambling page.