Expected return on your bets at a given slot RTP.
RTP (Return to Player) is the share of bets a slot pays back to players on average over the long run. An RTP of 96% means that out of every $100 wagered, the casino returns $96 on average — but that's a statistic over millions of spins, not a guarantee for one session.
The calculator shows a mathematical expectation, not a guaranteed outcome. Any single session can land well above or below the forecast — that's the slot's volatility.