Welcome to MastersofGambling, dear visitor from United States 🌍 !

Sports Bonus Calculator

Analyze the Wagering for Sports Bonuses

Sports Bonus Wagering Calculator

Casino Bonus Calculator

Calculate the Expected Value for Casino Bonuses

Betting ROI Calculator

Calculate the Return On Investment for Betting

Probability Calculator

Convert decimal odds into a probability

Odds Probability Calculator

Odds Calculator

Convert probability into decimal odds

Probability to odds calculator

Sports betting bonuses ⚽

CASINO betting bonuses 🎰



SlottoJAM Casino

Casino Welcome Package up to €500
Check bonus

ReloadBet Casino

Casino Welcome Bonus up to €300
Check bonus
Casino Welcome Bonus up to €300
Check bonus


    We research and provide information and tools, including calculators, that may be beneficial for online gamblers. While we might also present details about betting bonuses or online betting platforms, it is your responsibility to determine whether these sites adhere to the regulations of your country. We strongly advise against registering or playing on betting sites that aren’t legal in your jurisdiction. All information and resources provided on our site should be used at your own risk.

          • We encourage a responsible gambling

            Gambling can be dangerous and highly addictive. If you ever feel that you’re losing control over your gambling activities or are simply concerned about your behavior, please seek immediate help. While support services are available in many countries, we also recommend checking the tools and advice available at begambleaware.org. Remember, gambling is only fun when done responsibly.

          • Betting information available on MastersofGambling

            We display information that is publicly available or sourced from various outlets about betting sites. We neither test nor utilize the services of these betting sites, and we do not offer any advice or recommendations regarding which ones you should or shouldn’t use. The betting sites listed on our website are for informational purposes only. It’s imperative that you rely on your own judgment before making decisions related to your betting activities, claiming bonuses, or registering on any betting sites that might be featured on our site. Always ensure your actions are in compliance with the laws of your jurisdiction.

          • Links/banners to other websites

            MastersofGambling may include links or banners directing to third-party websites. We have no control over these websites or their content, and cannot be held responsible for actions you take on any third-party website that might result in losses or damages of any kind. If you visit another website by clicking on a link or banner from MastersofGambling, you do so at your own risk!

          • Your help is appreciated

            If you find any outdated or incorrect information on MastersofGambling, please notify us, and we’ll strive to correct it as quickly as possible.