Education only. This is a free educational reference about gambling math and risk. We never take a wager, hold a stake, or run a book — there is no deposit, no cash-out, and no bet to place here. Publishing odds and education is legal speech; taking bets is a licensed activity and is out of scope. Nothing here is betting, investment, legal, or financial advice.

Download the worksheets

Grab any of these as a CSV spreadsheet — opens in Excel, Google Sheets, or Numbers. Files are generated in your browser; nothing is uploaded, and there is still nothing to bet.

House edge by game

Every common casino game and bet, ranked by house edge, with RTP and rule notes. Roulette / blackjack / craps values come from the §4.7 engine; the rest are cited ranges.

Odds conversion table

A ladder of common American moneylines with their decimal odds and implied probability — a quick reference you can keep offline.

EV & bankroll worksheet

A ready-to-fill sheet: enter your probability, odds, and stake and the formulas compute EV, edge, and expected loss. Includes a bankroll / Kelly row.

What's inside

The house-edge sheet mirrors the table on the home page; the odds sheet mirrors the converter on the calculators page. The worksheet is a template with example rows you overwrite with your own numbers — the EV column shows how fast a −EV price drains a bankroll.