What this reference covers
- The three formats and what each one literally means
- Conversion formulas in all six directions, with worked lines
- Implied probability from each format, and the fair (no-vig) adjustment
- Overround / book-percentage math for two-way and multi-way markets
- A quick-lookup conversion table for common prices
- Rounding and half-cent traps that make a converted price disagree with the book
Download
Two formats, same content. The PDF opens a print-ready reference with a branded cover page; the Word file is editable if you want to annotate or extract formulas into your own notes.
// not an app download
This is an educational reference document (PDF and Word), not a betting app, software, account, or picks service. Nothing here is installed and nothing places a bet. To run these calculations interactively, use the calculators; to read the same material as articles, see the guides.
FAQ
Is this a betting app or software download?
No. It is an educational reference document in PDF and Word form. It explains odds formats, conversion formulas and implied-probability math. Nothing is installed, nothing places a bet, and there is no account or software of any kind.
What formulas does the reference include?
Conversions in all six directions between decimal, fractional and American odds; implied probability from each format; the no-vig (fair) adjustment by proportional normalisation; and overround / book-percentage math for two-way and multi-way markets, each with worked lines.
Are the prices in the document real market data?
No. Every price and probability is an illustrative teaching example chosen to demonstrate a calculation. The document makes no claim about any real market, book or event.