Use our free tool to find the real value of a casino’s welcome offer. Calculating your online casino bonus and the spending needed to claim it can be tricky. Our casino bonus calculator simplifies this for both deposit and no-deposit bonuses.

Let’s now learn more about how to use Gamesville’s casino bonus calculator.
It is very easy to use the casino bonus calculator, and you can do so by following the steps below.
☑️ Step 1: Select the correct type of bonus:

🔑 Online casino welcome bonuses tend to come in one of two types: a matched deposit bonus or a no deposit bonus.
The key difference is that with the former, you must deposit a stated amount to earn the bonus, whereas the no-deposit bonus does not require a deposit to be made.
Therefore, the key thing to do before you input any data is to select the correct calculator for you from the toggle at the top. The data you need to enter for each bonus varies depending on whether it is a non-deposit bonus or a matched deposit bonus, so after step one, proceed to the steps outlined below for your welcome offer…
If your bonus requires a deposit, complete the following data entries:
☑️ Step 2: Add the amount you are going to deposit to claim the bonus.
☑️ Step 3: Enter the stated percentage of the deposit bonus. No need to use the % mark; just the numerical value will do.
☑️ Step 4: Enter any wagering requirements. These will be stated in the terms and conditions.
☑️ Step 5: Indicate whether the requirements are based on the bonus amount alone or on both the qualifying deposit and the bonus amount.
☑️ Step 6: Enter the contribution rate* of the games you are going to play to fulfill the bonus.
☑️ Step 7: Click the Calculate button.
Contribution rates are stated in the terms and conditions of the offer, and different game types will have different contribution rates based on their return-to-player (RTP) percentage.
Games that offer better odds generally hold lower game contribution rates. For example, slots and keno typically have 100% contribution rates, which means everything you spend on those games contributes to your wagering requirement.
Other games, such as video poker, may contribute just 50% to your wagering requirement (so if you wager €50 on video poker, €25 of that goes towards your wagering requirement).
| Game | Contribution Rates |
|---|---|
| Slots | 100% |
| Keno | 100% |
| Video Poker | 50% |
| Table Games | 20% |
| Blackjack | 10% to 20% |
| Excluded Games | 0% |
⚠️ Remember to check the T&Cs for the eligible games. If a game isn’t on the eligible list, it won’t count towards your playthrough requirements, and you won’t be able to use bonus cash on it at all.
After clicking the Calculate button, the calculator’s results will be displayed below.
The results will highlight how much free bonus money you will earn, how much you will have to play with, including the bonus and your deposit, and, most importantly, how much you will need to bet to meet the wagering requirements for the offer to withdraw any remaining cash.
If your bonus does not require a deposit, then you need only enter the following information.
☑️ Step 2: Enter the stated bonus amount.
☑️ Step 3: Enter the wagering requirements for the offer as stated in the terms and conditions.
☑️ Step 4: Enter the game contribution percentage based on the games you are likely to play with the bonus.
☑️ Step 5: Click the Calculate button.
When you click on the button, the calculator will display the total amount you will need to bet in order to meet the wagering requirement for the bonus.
The casino bonus calculator is extremely useful to fully grasp the cost and scope of any online casino bonus. However, these details are just one factor you should consider when considering signing up with any of the best online casinos.
You can find out more information about all the top operators through our handy casino guides and also our compare casinos page, which allows you to compare all the key elements of top casinos at-a-glance.
Combined with the information from our deposit bonus calculator (or no deposit bonus calculator) you’ll have all the information you need to make the right choice about which casino to join!
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