Best Positive EV Betting Tools for 2025

Expected value (EV) betting is the basis of profitable sports betting. It is what defines a “good” bet from a “bad” bet.

EV betting means consistently betting when the odds are in your favor, not the sportsbook’s.

Here is a simple example:

Imagine flipping a coin; whether the coin lands on heads or tails is a 50/50 shot. There is no other outcome besides the coin landing on heads or tails. In sports betting, this means the coin landing on heads or tails would be priced at +100 (even money).

Picture this: the oddsmakers decided to make the price of heads +120 instead of +100.

It is still a 50/50 chance that the coin will land on heads, but here is the catch: they’re offering to pay you $1.20 profit for every $1 you bet, even though the chance of winning is still 50%, giving heads positive expected value.

This is what an EV tool in sports betting can help you find.

The Math Explained Simply

The expected value formula is: EV = (Probability of Winning) x (Amount Won) - (Probability of Losing) x (Amount Lost)

Real Example: Moneyline Bet

• You bet $100 on a team at +150.

• That means you win $150 profit if you're right.

• You believe the team has a 45% chance of winning (your edge).

• That means a 55% chance of losing.

EV = (0.45 × $150)−(0.55 × $ 100)
EV = $67.5 − $55
EV = $12.50

A +12.50 EV means, on average, you’d make $12.50 every time you placed this bet long-term. A positive EV betting tool does this for you, but with actual sporting events.

Key Expected Value Terms

• Expected Value (EV): The average amount you’d win or lose per bet if you placed the same bet an infinite number of times. Free EV betting tools exist and help you win more.

• Vig (or Juice): The built-in fee sportsbooks charge to create an edge for themselves, usually baked into the odds (e.g., -110 on both sides).

• Implied Probability: The win percentage the odds suggest. For example, +150 implies a 40% chance of winning. (Use: Implied Probability = 100 / (odds + 100) for plus odds.)

• Closing Line Value (CLV): The difference between the odds you bet and where the line closes. Consistently beating the closing line is often seen as a strong indicator of long-term profitability.

Positive EV betting software can help you maximize your results.

Best Expected Value Betting Tools

The best sports betting tools help bettors get an edge by offering a variety of features. Every sport is different, and some of the best expected value betting tools differ by sport.

• The best MLB betting tools allow you to create custom EV calculations based on each market. Tools like Pick The Odds and Unabated will enable you to capitalize on EV bets due to market inefficiency. Read our Pick The Odds review and our Unabated review.

• The best NFL betting tools make football betting manageable. With EV calculations for game lines, player props, team props, and custom devig methods, these tools help you make better NFL bets. Check out our Gambly review to learn more about the top NFL EV betting tools.

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