Slot Machine RTP Calculator

Work out slot machine rtp instantly with clear inputs, formula shown and shareable results.

About Slot Machine RTP Calculator

Return to player applies to total turnover, not to deposits, so expected loss is total amount wagered times one minus the RTP. The distinction matters enormously: a thousand spins at 0.50 wagers 500 and expects to lose 20 at 96% RTP, even though far less than 500 was ever deposited.

Formulas

Turnover

total wagered = spins x bet per spin

Expected loss

loss = total wagered x (1 - RTP)

Worked example

With the default values below, Slot Machine RTP Calculator returns Expected loss of $20.00. Change any input above and every figure here is recalculated in your browser.

Inputs used

Return to playeraccepts 50–100 %: 96 %
Number of spinsminimum 1: 1,000
Bet per spinminimum 0.01: 0.5

Results

Expected loss: $20.00
Expected amount returned: $480.00
Total wagered: $500.00
House edge: 4.000%

Step by step

1Values used
2Turnover
3Expected loss
4Expected loss= 20.00
5Expected amount returned= 480.00
6Total wagered= 500.00
7House edge= 4.000

Assumptions and limits

The result is derived only from the 3 inputs listed above. Anything not among them is not part of the calculation.
In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
Figures are rounded for display to 3 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

How is the Slot Machine RTP figure worked out?

total wagered = spins x bet per spin. Return to player applies to total turnover, not to deposits, so expected loss is total amount wagered times one minus the RTP.

Why does this matter?

The distinction matters enormously: a thousand spins at 0.50 wagers 500 and expects to lose 20 at 96% RTP, even though far less than 500 was ever deposited.

What do I need to enter?

Enter return to player, number of spins, bet per spin. The defaults shown are a realistic worked example — swap in your own figures to get a result you can use.