EV & ROI calculator.
Check the expected value of a bet against your own probability, and measure ROI across your settled picks.
Expected value (EV)
Compare your own estimated win probability against the odds. Positive EV means the odds are in your favour by your estimate — it is not a guarantee.
EV depends entirely on your probability estimate. A wrong estimate gives a wrong EV.
ROI / yield
Measure return on what you staked over a set of settled picks.
Runs in your browser. Nothing you enter is saved or sent to TipStaq.
Frequently asked
What is expected value (EV)?
EV estimates the average profit of a bet if it were repeated many times, using your own win probability and the odds. Positive EV means the odds look favourable by your estimate — not a guarantee.
What is ROI?
Return on investment: profit divided by total staked, as a percentage. It only means something across a meaningful sample of settled picks.
Is positive EV a guarantee of profit?
No. EV depends entirely on your probability estimate. If the estimate is wrong, so is the EV. All betting involves risk.