How do I convert American odds to decimal?

For positive American odds (e.g. +150), divide by 100 and add 1 → 2.50 decimal. For negative (e.g. −120), divide 100 by the absolute value and add 1 → 1.83.

What is implied probability?

The probability the odds suggest. Implied % = 1 / decimal odds × 100. Compare it to your own estimate — if you think the real chance is higher, it's a value bet.

How is a parlay payout calculated?

Multiply every leg's decimal odds together, then multiply by your stake. A $10 three-leg parlay at 2.00 × 1.80 × 2.50 returns $90.

Is sports betting legal in Canada?

Yes — single-event sports betting was legalised across Canada in August 2021. Ontario operates a regulated open market via iGaming Ontario; other provinces use provincial sportsbooks (PROLINE+, PlayNow, Mise-O-Jeu, ALC).

Parlay Calculator

Free parlay calculator for Canadian bettors. Add as many legs as you want, mix decimal, American and fractional odds, and see your combined odds, CAD payout and implied probability before you place the bet.

Betting Odds Calculator

Parlay · decimal · American · fractional

CAD · 19+

Single bet

OddsStake (CAD)

Payout$52.50

Profit$27.50

Implied probability47.6%

2.10 dec · +110 US · 11/10 frac

Parlay

Parlay stake (CAD)

Combined odds—

Payout—

Implied probability—

FAQ

How do I convert American odds to decimal?: For positive American odds (e.g. +150), divide by 100 and add 1 → 2.50 decimal. For negative (e.g. −120), divide 100 by the absolute value and add 1 → 1.83.
What is implied probability?: The probability the odds suggest. Implied % = 1 / decimal odds × 100. Compare it to your own estimate — if you think the real chance is higher, it's a value bet.
How is a parlay payout calculated?: Multiply every leg's decimal odds together, then multiply by your stake. A $10 three-leg parlay at 2.00 × 1.80 × 2.50 returns $90.
Is sports betting legal in Canada?: Yes — single-event sports betting was legalised across Canada in August 2021. Ontario operates a regulated open market via iGaming Ontario; other provinces use provincial sportsbooks (PROLINE+, PlayNow, Mise-O-Jeu, ALC).