Clarity starts with the numbers.
OddsCalculator.ca is an independent, free educational calculator for understanding betting prices. Our goal is to make the arithmetic understandable, with no account required.
What we provide
Convert American, decimal and fractional prices; calculate potential winning returns; and explore break-even probability, expected value and proportional no-vig estimates. All calculations happen in your browser.
The website does not accept bets, handle deposits or recommend a sportsbook. There are no sportsbook affiliate links or gambling promotions.
How we approach accuracy
We use standard conversion formulas, retain full internal numerical precision and label approximate fractional output. Our source project includes automated checks of conversions, boundaries and worked examples. Displayed currency is CAD; the underlying ratios work with any consistent currency unit.
Calculated prices are not predictions. No-vig and expected-value tools rely on assumptions explained beside their results. Read the precision policy in the fractional odds guide for display limitations.