Free football betting tools
Calculators for the maths behind a bet: convert odds, see the bookmaker's margin and take it back out, and work out what a bet returns. They calculate. They do not predict, and nothing here is betting advice.
Odds calculator
Convert decimal, fractional and American odds, see the probability a price implies and the bookmaker’s margin, then take the margin out.
- Odds converter
- Implied probability calculator
- No-vig fair odds
- Expected value calculator
- Kelly criterion calculator
Bet calculator
Total stake, returns and profit on singles, accumulators, doubles, trebles, each way bets and Lucky 15s, with void selections settled at 1.00.
Open the bet calculatorHow these tools work
Every calculator prints its formula and a worked example underneath, so you can check any number by hand. The odds calculator removes the bookmaker’s margin with the same maths our own model uses, and fair odds are always one divided by the probability, with no margin added.
A calculator cannot tell you whether a bet is good. It can tell you what a price implies and what a bet pays. When we tested our model on matches it had never seen, the bookmakers’ closing price usually came out ahead, and we say so on every page where it matters.
More free tools
These calculators work on any odds you type in. Our own model’s probabilities for the coming matches are on the predictions page, with every call graded afterwards.
18+. These tools calculate, they do not predict, and nothing on this page is betting advice. Please gamble responsibly: BeGambleAware.
