Fractional Odds Converter
Convert fractional odds into decimal, American and implied probability.
About Fractional Odds Converter
Fractional odds express profit relative to stake, excluding the stake from the fraction. Adding one converts to decimal odds, which include it. Because fractional odds omit the stake, comparing 7/4 with 9/5 requires converting them, which is why exchanges standardised on decimal.
Formula
Fractional Odds
Decimal odds = numerator ÷ denominator + 1
- fractional odds
- Profit to stake, so 7/4 means 7 profit for every 4 staked
- odds against
- When the numerator exceeds the denominator
Worked example
With the default values below, Fractional Odds Converter returns Decimal Odds of 2.7500. Change any input above and every figure here is recalculated in your browser.
Inputs used
- Numeratoraccepts 1–10,000
- 7
- Denominatoraccepts 1–10,000
- 4
- Stakeminimum 0
- 20
Results
- Decimal Odds
- 2.7500
- Implied Probability
- 36.3636%
- Net Profit
- $35.00
- Total Return
- $55.00
- American Odds
- 175
Step by step
- 1Values used
- 2Fractional Odds
- 3Decimal Odds= 2.7500
- 4Implied Probability= 36.3636
- 5Net Profit= 35.00
- 6Total Return= 55.00
- 7American Odds= 175
Assumptions and limits
- The result is derived only from the 3 inputs listed above. Anything not among them is not part of the calculation.
- In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
- Figures are rounded for display to 4 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
- These figures are estimates based on population-average formulas and are intended for training and recreational planning only. They are not medical advice. Consult a qualified health professional before starting or changing an exercise programme, particularly if you have an existing medical condition.
- This is an estimate for general information and not professional medical advice. See the full disclaimer for the limits that apply to this kind of calculator.
How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.
These figures are estimates based on population-average formulas and are intended for training and recreational planning only. They are not medical advice. Consult a qualified health professional before starting or changing an exercise programme, particularly if you have an existing medical condition.
Frequently Asked Questions
How is Fractional Odds calculated?
Decimal odds = numerator ÷ denominator + 1 Fractional odds express profit relative to stake, excluding the stake from the fraction. Adding one converts to decimal odds, which include it.
Why does Fractional Odds matter?
Because fractional odds omit the stake, comparing 7/4 with 9/5 requires converting them, which is why exchanges standardised on decimal.
What values do I need to enter?
This calculator takes 3 inputs: Numerator, Denominator, Stake. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.