RTP Calculator
Calculate expected returns, losses and house edge based on RTP, bet size, volatility and number of spins.
Expected Results
Mathematical Average (at exactly 96% RTP)
Total Wagered
€1,000.00
Expected Return
€960.00
Expected Loss
€40.00
House Edge
4.00%
Probable Range (95% CI)
Low Estimate
€526.14
High Estimate
€1,393.86
Worst Case (95%)
-€473.86
Best Case (95%)
+€393.86
Profit Probability
Chance of Profit
42.8%
With fewer spins, variance can still work in your favor. Short sessions give you better odds of walking away in profit.
These calculations are based on mathematical expectation. The probable range shows where 95% of results fall, based on game volatility (UKGC methodology).
Know your odds before you spin
Project expected outcomes and check your real results against the math.
Expected return and loss
Project expected return, loss and house edge from RTP, bet size and spins.
Check your actual RTP
Enter what you wagered and won to compute the real RTP of your session.
Confidence intervals
See whether your result sits within the statistically expected range.
Ruin probability
Estimate the chance of busting your balance over a number of spins.
Profit probability
How likely you are to end a session in profit at a given RTP and volatility.
Volatility aware
Factor slot volatility into every projection for realistic ranges.