Free tools

Calculators & converters

Free calculators and converters built on our public methodology — no signup, and they run entirely in your browser.

Score any bonus 0–100 — deposit match, no-deposit, cashback or sticky. See what it's really worth.

Decimal ⇄ fractional ⇄ American, plus implied probability and what a $10 bet returns.

The bookmaker's margin (vig) and the no-vig fair odds behind any market.

Combine 2–8 legs for the combined odds and payout — and why margin compounds.

How much to stake on the opposite outcome to lock in a guaranteed result.

New to the terms behind these tools? Start with our plain-English guides, the glossary, or the full rating methodology. More tools launching soon.