The Free Bet Calculator is the world’s leading online sports bet calculator. It’s used by punters and bookmakers alike, to calculate the stake, return and profit for an extensive range of bets. All of the most popular bet types are supported, including Lucky 15, Accumulator, Trixie, Patent and Round Robin, as well as speciality bets such as Alphabet, Magnificent 7, Union Jack and the infamous Bookies Nightmare!

Large Accumulators and perms of up to 20 selections are accepted, with dead heat, joint favourite and Rule 4 options providing full support for greyhound and horse racing bets.

The Settings menu allows you to adjust the odds format and type of stake to match your betting preferences. You can also configure bonuses and consolations, and change how each way bets are settled to reflect your bookmaker’s rules.

To quickly analyse how your returns may be affected by different outcomes, you can simply change the status of selections, and recalculate your bet. This can answer many questions, such as can I still make a profit if only two of my Lucky 15 selections win?

With over 100 million bets calculated since its launch in 2007, the Free Bet Calculator has become a reliable and trusted resource for anyone interested in sports betting. It’s quick and easy to use, even for complex bets, with contextual help available via the information buttons . New visitors may also find the detailed Betting Glossary and Help pages useful.