Free Betting Calculators (Australia)
Every tool a data-minded punter needs, free and with no sign-up: same game multis, hedging, Kelly staking, multi payouts and odds conversion. Built by the team behind the TippingEdge NRL model.
SGM Calculator
Price a same game multi properly: combined odds, payout, profit and a fair-value benchmark that shows the correlation discount books apply.
Open SGM calculator →Multi Bet Calculator
Combined odds and payout across up to 12 legs in different matches, plus the real probability of the whole multi landing.
Open multi calculator →Hedge Calculator
Lock in equal profit on both sides of an open bet, and compare the bookmaker's cash out offer against hedging yourself.
Open hedge calculator →Kelly Staking Calculator
Convert your edge into the mathematically optimal stake, with the half and quarter Kelly versions professionals actually use.
Open Kelly calculator →Odds Converter & Value Checker
Convert decimal, fractional, American and implied probability - then check whether a price actually beats your estimate.
Open odds converter →This Week's NRL Probabilities
The numbers to feed these tools: our model's win probability for every NRL game this round, graded publicly after each round.
View this week's tips →Which calculator do I need?
| Your situation | Use this |
|---|---|
| Building legs within one NRL match | SGM calculator |
| Combining bets across different matches | Multi calculator |
| One leg from a big collect, want certainty | Hedge calculator |
| Offered a cash out, not sure if it's fair | Hedge calculator (cash out field) |
| Know your edge, unsure how much to stake | Kelly calculator |
| Comparing prices or judging value | Odds converter & value checker |
All tools run in your browser - nothing you type is sent anywhere. They are the same calculations we use when turning the model's probabilities into weekly NRL tips and SGM picks. If you are new to betting maths, start with our NRL betting guide for beginners and the line betting explainer.