Odds Calculator
Calculate your possible payout, profit and implied probability from decimal, American or fractional odds. This tool is built for Canadian beginners who want to understand what a betting price really means before placing a wager.
Your inputs
Your results
Odds conversion
How to use the odds calculator
This odds calculator helps you turn a betting price into useful numbers: total return, profit and implied probability. It works with the three odds formats beginners are most likely to see: decimal, American and fractional.
Enter your stake
Type the amount you want to risk. The calculator uses Canadian dollars, but the maths works the same with any currency.
Choose the odds format
Select decimal, American or fractional odds. Then enter the price exactly as it appears on your sportsbook.
Calculate the result
Review the possible total return, profit, implied probability and converted odds before deciding whether the bet makes sense.
What the calculator shows
A good betting calculator should do more than show a single payout number. The most useful view separates the amount risked, the amount returned, the profit and the probability behind the price.
Total return
Total return is the full amount you would receive if the bet wins. In most sportsbook calculators, this includes your original stake.
Profit
Profit is your total return minus your stake. If you stake C$20 and receive C$50 back, your profit is C$30.
Implied probability
Implied probability turns odds into a percentage. It helps you understand what chance the price is suggesting.
Odds conversion
The same bet can be displayed as decimal, American or fractional odds. Conversion makes mixed formats easier to compare.
Odds calculator formulas
The calculator does the maths automatically, but it is still useful to know what is happening behind the result. The formulas below are the standard beginner versions.
Decimal odds
Stake × Decimal odds = Total returnExample: C$20 × 2.50 = C$50 total return. Profit is C$50 − C$20 = C$30.
American odds
Positive: Stake × Odds / 100 = Profit
Negative: Stake × 100 / Odds = ProfitAmerican odds focus on profit first. Add your stake back to find the total return.
Fractional odds
Stake × Numerator / Denominator = ProfitExample: C$20 at 3/2 makes C$30 profit. Add the stake back for a C$50 total return.
Implied probability
Decimal version: 1 / Odds × 100Decimal odds of 2.50 imply a 40% chance because 1 / 2.50 = 0.40.
Decimal, American and fractional odds examples
The examples below show how different prices affect return, profit and implied probability. Bigger possible profit usually means the odds imply a lower chance of winning.
| Stake | Decimal | American | Fractional | Total return | Profit | Implied probability |
|---|---|---|---|---|---|---|
| C$10 | 2.00 | +100 | 1/1 | C$20 | C$10 | 50.00% |
| C$20 | 2.50 | +150 | 3/2 | C$50 | C$30 | 40.00% |
| C$50 | 1.80 | -125 | 4/5 | C$90 | C$40 | 55.56% |
| C$10 | 3.00 | +200 | 2/1 | C$30 | C$20 | 33.33% |
Payout vs profit
Payout, also called total return, is the full amount you receive back if your bet wins. Profit is only the amount won after removing your original stake. This is one of the most common beginner misunderstandings.
Simple example
If you stake C$20 at 2.50 odds, the total return is C$50. That does not mean you made C$50 profit. You risked C$20, so your profit is C$30.
Why it matters
Seeing the difference between payout and profit helps you read a betslip properly. It also keeps your expectations realistic before you place a bet.
If you want to understand how this connects to stake size, read our bankroll management guide.
Common odds calculator questions
Is an odds calculator the same as a payout calculator?
Usually, yes. A payout calculator focuses on how much a winning bet would return. An odds calculator often does that plus a little more, such as converting odds formats and showing implied probability.
Does total return include my stake?
Yes, in most betting calculators total return includes your original stake. Profit is the amount left after subtracting the stake.
Can I calculate American odds?
Yes. Choose American odds and enter a price such as +150 or -150. Positive American odds show profit on a C$100 stake, while negative odds show how much you need to stake to win C$100 profit.
Can I calculate fractional odds?
Yes. Choose fractional odds and enter a price such as 3/2, 5/2 or 1/2. The calculator will convert the fraction into decimal odds before calculating return, profit and implied probability.
What does implied probability mean?
Implied probability is the percentage chance suggested by the odds. For example, decimal odds of 2.50 imply a 40% chance before any adjustment for bookmaker margin.
Does this calculator include bookmaker margin?
The calculator shows the raw implied probability from the odds you enter. It does not remove bookmaker margin or compare prices across sportsbooks.
Can this calculator guarantee value?
No. It can explain the maths behind a price, but it cannot tell you whether a bet will win or whether the odds are truly valuable.
Can I use it for parlays?
This version is designed for single bets. Parlay support can be added later by multiplying the decimal odds of each leg and then using the same payout calculation.
Explore more tools and beginner guides
Once you understand payout, profit and implied probability, the next step is to connect the numbers to real bet types, safer staking habits and Canadian betting rules.