RTP calculator

Is a higher-RTP game worth switching to? RTP is published as a percentage, which is a number people read past. Stated as the cost of a session it is usually larger than expected: 1,000 spins at a euro costs 60 at 94% and 30 at 97%.

When to use it

When choosing between two games, and when deciding what to clear a bonus on. It is the cheapest decision available to a player, because it changes the price without changing anything about the experience.

What each field means

Spins in the session

How many spins you expect to play. A thousand is about an hour and a half at a normal pace.

Stake per spin

What you bet each spin. Turnover is shown under the field as you type.

First and second game RTP

The two RTPs to compare, from each game’s own page. A game that ships in several RTP versions uses whichever the casino runs — the figure in the game info screen is the one that applies.

Reading the results

Expected cost of the session

Turnover multiplied by the house edge, which is one minus the RTP. An average over the long run, not a prediction of your session.

Cost per hour

The same edge stated as a rate, at 600 spins an hour. This is the figure that lands: 4% on a euro spin is 24 an hour, whatever happens on screen.

The difference

What switching between the two games saves or costs over the session you defined.

The table

The same session priced across the RTP bands you will actually meet, from 94% to 98%.