See your expected return range and bust probability for any slot game based on RTP, session length, and bet size.
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Enter the slot's RTP (found in the paytable or game info screen), select the variance level (low variance slots pay smaller amounts more frequently; high variance slots pay large amounts rarely), your bet per spin, session length, and starting bankroll. The calculator uses a normal distribution approximation to estimate the 5th–95th percentile outcome range.
Two slots with identical 96% RTP can feel completely different to play. A low variance slot might return 90–102% of your stake over 500 spins with high consistency. A high variance slot with the same RTP could see you lose your entire bankroll or win 10x — the mean is the same, but the journey varies enormously.
Understanding variance helps you choose the right slot for your bankroll. With a small bankroll and limited time, low variance slots maximise your play time. With a larger bankroll and a tolerance for big swings, high variance slots offer the chance of significant wins at the cost of greater bust risk. Always play within your means.
