House Edge Calculator
Calculate theoretical casino cost from house edge or RTP. Enter an amount per round, the number of rounds and a percentage to estimate total turnover, expected return and expected loss over the long run.
House edge and RTP describe theoretical averages across a very large number of plays. They do not predict whether one session will win or lose.
Calculate House Edge and RTP
Choose whether you want to enter a house-edge percentage or an RTP percentage.
Your Theoretical Results
House Edge and RTP Formula
RTP = 100% − house edge
Expected loss = Total turnover × house edge
For example, R10 wagered over 100 rounds creates R1,000 in turnover. At a 2.7% house edge, the theoretical expected loss is R27 and the theoretical expected return is R973.
Related Casino Guides
House edge varies by game and, in blackjack, by the exact table rules and player decisions. Use these guides to understand the percentages behind the calculator.
RTP Explained
Learn how Return to Player relates to house edge, total wagering and long-run theoretical returns.
Read RTP Guide →Blackjack Rule Variations
See how 3:2 versus 6:5 payouts, soft 17, doubling, splitting and surrender can change blackjack’s house edge.
Read Blackjack Guide →Roulette Strategy South Africa
Compare European, French and American roulette house edges and understand why betting systems cannot remove the casino advantage.
Read Roulette Guide →Game rules can change the percentage
Roulette wheel type, blackjack rules, player decisions, side bets and individual slot configurations can change the theoretical percentage. Treat presets as examples and use the figure published for the exact game you intend to play.
House Edge Calculator FAQ
Does a 2% house edge mean I will lose 2% in every session?
No. It is a long-run average relative to total wagering turnover. A short session can finish with a large win, a large loss or anything in between.
What is total turnover?
Turnover is the sum of all wagers. Betting R10 for 100 rounds creates R1,000 of turnover even if the same bankroll is reused.
Is higher RTP always better?
A higher theoretical RTP means a lower mathematical house edge, but volatility, game rules and session length still affect the experience and short-term outcome.
Important Disclaimer
BettingGuru SA calculators are provided for educational and informational purposes only. Results are mathematical estimates based on the values entered and do not guarantee winnings, profit, successful withdrawals or future betting outcomes.
Always check the latest operator terms, odds, bonus rules, wagering requirements, settlement rules and withdrawal conditions before depositing or placing a bet.
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