What value betting actually means
A value bet isn't a bet on a likely winner — it's a bet at a price longer than the true probability of winning. If a horse has a genuine 25% chance of winning and the bookmaker prices it at 4/1 (implied 20%), the bet has positive expected value: long-term, betting that horse at that price would profit. This calculator does the maths — enter the bookmaker's price plus your honest estimate, and see whether the EV is positive or negative.
Compare your probability vs the market
Value betting is the foundation of long-term profitable punting: bet only when you think the true probability of winning is higher than what the bookmaker is pricing. Type the bookmaker's price plus your own win-rate estimate to see whether the bet has positive expected value.
= 6.00 decimal · implied 16.7%
Honest estimate. If your figures match the bookies you have no edge.
Add a stake to see expected return in £.
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Frequently Asked Questions
Common questions
- The win-rate the bookmaker is pricing into the odds. Decimal 5.0 (5/1) implies a 20% chance: 1 / 5.0 = 0.20. If you think the true chance is higher than 20%, the bet has positive expected value at that price. If lower, it has negative expected value (most bets fall here because of bookmaker margins).
Gamble Responsibly
Gambling should be entertaining and not seen as a way to make money. Never bet more than you can afford to lose. If you or someone you know has a gambling problem, help and support is available.