Craps Payout Calculator
Calculate common craps bet payout math, true odds, win probability, house edge and expected loss per $100. This page is a reference calculator, not a prediction, betting system, legal route, payout approval or live-table certification.
What this owns
Common baseline craps payout math for pass, don't pass, come, don't come, odds, lay odds, place, buy, lay, field, hardways and common proposition-style bets.
What this does not own
Table-specific rounding, live dealer procedures, casino disputes, dice fairness, legal availability, bankroll advice, tax treatment, promotion terms or player suitability.
Calculate a craps bet
Ready. Do not enter account, ticket, payment, identity or private support data.
Craps payout summary will appear here.
Crawlable bet reference
| Bet | Common payout | Win probability | True odds | House edge | EV per $100 | Rounding note |
|---|
Table profile and rounding caveats
Buy and lay commission
Commission timing changes the edge. This calculator labels common baseline assumptions and tells you when table-specific treatment matters.
Field payout variants
Field edge changes when 2 or 12 pays double or triple. Verify the visible payout panel before using field numbers.
Odds are not whole-session safety
Free odds may carry no house edge, but they still increase active reserve and session volatility.
Payout "to" vs "for"
"To" usually means profit only; "for" usually includes the original stake.
A $100 bet paid 7 to 1 usually returns $700 profit plus the original $100 stake if it wins. A sign that says $800 for $100 may already include the stake. This calculator shows profit and total return separately so table wording does not blur the two.
Formula registry and QA
Formula version: Craps Payout Reference Model v1.0. Last QA: May 19, 2026.
Public verification file: /tools/craps/payout-calculator/test-fixtures.json. Probability-table route: /tools/craps/probability-table/.