Casino Bonus Calculators
Three free calculators that turn bonus terms into numbers. Type in the offer, see the turnover and the expected value, and decide with the maths in front of you.
Casino Bonus Wagering Calculator
Enter the bonus, the multiplier and whether it applies to deposit and bonus. You get the total you must bet before you can withdraw.
Use it when you want to know the turnover of an offer.
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Casino Bonus Value Calculator
Enter deposit, match percentage, cap, wagering and max cashout. You get the expected value of a welcome bonus after the cost of wagering.
Use it to compare two deposit bonuses.
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Free Spins Value Calculator
Enter spin count, spin value, RTP and wagering on winnings. You get the theoretical winnings and the expected return of a spin package.
Use it to compare free spins offers.
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Why use a casino bonus calculator
A bonus headline tells you the size of the gift. The terms tell you what it costs to unwrap it. "200% up to €500 plus 100 free spins" sounds better than "50% up to €100", yet the smaller offer can be worth more once you add the wagering multiplier, the max bet rule and the cashout cap. The calculators on this page do that sum for you in a few seconds.
We built them for our own reviews. When we check a welcome package for a Vavada review or compare offers on the bonus codes page, we run the same formulas you find here. You can use them on any offer, from any casino.
What each tool does
The wagering calculator answers one question: how much do I need to bet? It multiplies the bonus, or the deposit plus the bonus, by the multiplier. A €100 bonus at 35x needs €3,500 of bets. If the same 35x applies to a €100 deposit plus a €100 bonus, you need €7,000. The page also shows how game contribution changes the total.
The bonus value calculator goes one step further. It works out the bonus from your deposit and the match percentage, applies the cap, adds the wagering and then estimates what that wagering costs at a 96% RTP. The result is the expected value of the bonus, cut to the max cashout if the offer has one.
The free spins value calculator does the same for spin packages. It multiplies the spin count by the spin value, applies the RTP of the game and then subtracts the cost of wagering on the winnings. 100 spins at €0.10 with 30x wagering end at €0 on average, while 50 spins at €0.20 with no wagering keep about €9.65.
Expected value in one paragraph
Every casino game keeps a small share of each bet on average. That share is the house edge, which is 100% minus the RTP. A slot with 96% RTP keeps about 4%. When a bonus makes you bet €3,500, the average cost is €3,500 x 4% = €140. Subtract that from the bonus and you have the expected value: EV = bonus - total wagering x house edge. For bonus-only wagering the offer breaks even at 25x on a 96% RTP game. The RTP and volatility guide explains where the edge comes from.
How to get reliable results
- Copy the numbers from the bonus terms, not from the banner. Banners often leave out the wagering base.
- Check the RTP version of the game you will play. Many slots run in several versions, and our slot pages such as Gates of Olympus RTP list the ones we found.
- Look for the max bet rule and the time limit. They do not change the formula, but breaking them can void the bonus.
- Compare offers with the same deposit, so the results are on the same scale.
If the maths shows a negative value, you do not have to skip the casino. You can play without the bonus, or look for no wagering bonuses and low wagering free spins, where more of the bonus reaches your balance. The wagering requirement guide and our explainer on bonus terms cover the rules behind the numbers.
The calculators are for information only. They show averages, and gambling always carries the risk of losing money. Set a budget before you play and read our responsible gambling page if play stops being fun.