Odds Calculator

Calculate probability and odds from favorable and total outcomes.

Calculator

Enter Outcome Details

Number of favorable outcomes.

Total number of possible outcomes.

Table of Contents

1 How to Calculate
2 Odds Formula
3 Practical Examples
Steps

How to Calculate

To calculate odds and probability, follow these steps:

  1. 1
    Count the number of favorable outcomes
  2. 2
    Count the total number of possible outcomes
  3. 3
    Calculate probability and odds using the formulas
Formula

Odds Formula

The formulas for calculating probability and odds are:

Formulas:
Probability = (Favorable Outcomes / Total Outcomes) × 100%
Odds = Favorable Outcomes : Unfavorable Outcomes
Examples

Practical Examples

Example 1 Rolling a Die

What are the odds of rolling a 6 on a standard die?

Favorable Outcomes: 1 (rolling a 6)

Total Outcomes: 6 (all possible numbers)

Probability = (1/6) × 100% = 16.67%

Odds = 1:5

Example 2 Drawing Cards

What are the odds of drawing a heart from a standard deck?

Favorable Outcomes: 13 (hearts in deck)

Total Outcomes: 52 (total cards)

Probability = (13/52) × 100% = 25%

Odds = 13:39 = 1:3

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