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አማርኛ EV calculator
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The only formula that separates betting from guessing
Every price is a probability wearing a disguise: decimal odds of 2.50 claim the outcome happens 40% of the time. If your own estimate says 45%, the market is underpricing it and the gap — expected value — is yours; if your estimate says 38%, the same attractive-looking price quietly costs you money. Nothing else about a bet matters until this comparison is made, which is why this calculator sits at the centre of our toolset.
The hard part is never the arithmetic, it is the probability. Two honest sources exist: a model built from data (ours is a time-decayed Poisson blend, published in full), or the sharpest available market price with the margin stripped out — our no-vig calculator does that. Gut feeling is not a source; it is how the margin gets paid.
One warning the industry never prints: a positive-EV bet still loses most weeks. Our own public record shows drawdowns of 8+ units inside a sample that the model considers positive value — that is what variance does to true edges, and any tool promising smoother results is lying to you.
EV FAQ
The average profit or loss per unit staked if the same bet were repeated many times: EV = (decimal odds × your probability) − 1. At 2.50 with a 45% chance, EV is 2.50 × 0.45 − 1 = +12.5% — you expect to make 0.125 units per unit staked over the long run.
No — it usually loses if the probability is under 50%. Positive EV means the price overpays the risk, so repeating similar bets is profitable over hundreds of trials. Any single result is dominated by variance.
That is the whole game. Ours comes from a Poisson goal model blended with market prices — the methodology is public. If you take the probability implied by the odds themselves, EV is always negative by exactly the bookmaker margin.
Our own model only publishes a pick when the blend clears the best available price by a set margin — small edges disappear inside the estimate error. Treat sub-2% EV as noise unless your probability source is exceptional.