Expected Value (EV) Calculator
Quick Facts
- Calculates expected value and ROI.
- Inputs: odds, your probability, stake.
- Outputs: EV per outcome and overall.
How to use
Steps
Add odds and your estimated probability for each outcome. Set a stake to see EV and ROI per outcome and in total.
Formula & definitions
Formula: EV = Stake × (p × odds − 1)
- Expected Value
- Long-run average profit/loss per bet.
- ROI
- EV as a percentage of stake.
Expected Value (EV) Calculator
unit(s)
| Odds | Your Probability | EV (Profit) | ROI | |
|---|---|---|---|---|
0.00 | 0.00% | |||
0.00 | 0.00% |
Total EV: 0.00Total ROI: 0.00%
What is Expected Value (EV) in Sports Betting?
The EV Calculator is your essential tool for finding +EV (positive expected value) bets—helping you bet smart, not just for fun! Instantly see the mathematical edge of your bet based on your probability and the odds offered by the sportsbook.
How Does the EV Calculator Work?
Expected Value (EV) is the long-term average profit or loss you can expect from a bet if you placed it many times. Our calculator lets you enter your odds (decimal, American, or fractional), your estimated probability (as % or decimal), and your stake amount.
- Find +EV bets to maximize your edge over the sportsbook
- Calculate ROI (Return on Investment) for every outcome
- Great for sports trading, value betting, and bankroll growth
How to Use the Oddsy EV Calculator
- Enter the odds for each outcome (choose your preferred format).
- Enter your probability for each outcome (e.g. 0.52 or 52%).
- Set your stake per bet.
- See your expected profit (EV) and ROI per bet and in total!
Tip: Only bet when your probability is greater than the sportsbook’s implied probability.
+EV bets are the fastest way to grow your bankroll long-term!
+EV bets are the fastest way to grow your bankroll long-term!
For more, check out our Vig Calculator to see the real edge hidden in the odds.