ProBetting · Simulator
Bet Expected Value Calculator
Is a bet +EV — or is the book taking its cut?
Assumptions
Expected value
-$13
EV per $1 staked
-$0
Break-even probability
40%
| Line | Value |
|---|---|
| Potential payout | $250 |
| Break-even (implied) probability | 40% |
| Your probability | 35% |
| Expected value | -$13 |
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Built by The Crimson Bench · Educational model, not financial advice
About the Bet Expected Value Calculator
Enter the odds, your true win probability, and stake to see the bet’s expected value and the break-even probability the odds imply.
It's built for directional planning: change any assumption and watch the whole projection move, the way a seasoned operator pressure-tests a plan before committing capital. Everything is computed live in your browser — nothing is sent anywhere.
How the Bet Expected Value Calculator Works
The model takes 3 assumptions and returns 3 headline metrics plus a full breakdown. Here is exactly what goes in and what comes out — no black box.
The Inputs
| Assumption | Example value |
|---|---|
| Stake | $100 |
| Decimal odds | 2.5 |
| Your true win probability | 35% |
Worked Example
Every figure below is produced by the live model using the example assumptions above. Change any input in the simulator to see your own numbers.
Expected value
-$13
EV per $1 staked
-$0
Break-even probability
40%
| Line | Value |
|---|---|
| Potential payout | $250 |
| Break-even (implied) probability | 40% |
| Your probability | 35% |
| Expected value | -$13 |
The Operator's Read
Negative EV — the odds imply you need to win 40% of the time, more than your 35%. Most bets are -EV by design; the house margin is the point. Educational only.
Assumptions & Limitations
- •The model is deterministic: it projects your inputs forward with clear arithmetic, not a Monte-Carlo or probabilistic forecast. It shows one scenario at a time — run several to bracket a range.
- •Defaults are illustrative benchmarks, not your business. Replace every field with your real numbers before drawing conclusions.
- •It abstracts away taxes, financing, seasonality, and one-off events unless a field explicitly captures them. Treat the output as a directional estimate.
- •This is an educational tool, not financial, investment, tax, or legal advice. Validate real decisions with a qualified professional.
Frequently Asked Questions
What does the Bet Expected Value Calculator calculate?
Enter the odds, your true win probability, and stake to see the bet’s expected value and the break-even probability the odds imply. It takes 3 assumptions — Stake, Decimal odds, Your true win probability — and returns Expected value, EV per $1 staked, Break-even probability, along with a full projection table you can export.
How do I use the Bet Expected Value Calculator?
Enter your own figures in the input fields above — Stake, Decimal odds, Your true win probability, and the rest. The model recalculates instantly and shows the resulting Expected value and full breakdown. No sign-up needed to run it.
Is the Bet Expected Value Calculator free?
Yes — you can run the simulator and see the headline results for free. Toolkit Pro unlocks the full projection table, Excel/PDF export, saved scenarios, and AI analysis: $180/mo, $1,728/yr, or unlock any 3 simulators for $20.
What's the difference between this and a free calculator?
A calculator answers one question. This simulator models the full picture — multiple linked assumptions, a projection table, and scenario comparison — the way an operator would build it in a spreadsheet, but instantly.
Who built the Bet Expected Value Calculator?
The Crimson Bench's Ivy League-educated operators — the same people we deploy into C-suites. This is the self-serve version of a model they'd build inside a live engagement.
Is this financial advice?
No. The Bet Expected Value Calculator is an educational modeling tool for directional planning — not financial, investment, tax, or legal advice. Validate any real decision with a qualified professional.
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The Crimson Bench · Est. 2002 · Founded in New York City
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