Probability Calculator
Probability = Favorable outcomes ÷ Total outcomes1÷6≈0.1667 (16.67%)
Free online tool
Probability Calculator
Enter favorable outcomes and total outcomes to find the probability.
Instant calculation
Probability Calculator
Enter favorable outcomes and total outcomes to find the probability.
Your result
Calculation
Your numbers stay in this browser. Nothing is uploaded or saved.
Three clear steps
How to use this calculator
- 01
Enter favorable outcomes
Type the number of ways the event can occur.
- 02
Enter total outcomes
Type the total number of possible outcomes.
- 03
See probability
Calculate to see the probability as decimal and percentage.
The formula
How this calculation works
Classical probability formula. Result is between 0 (impossible) and 1 (certain).
Check the method
Worked examples
Each example follows the same formula used by the calculator.
Rolling a 6 on a fair die?
1÷6≈0.1667 (16.67%)≈ 0.1667 (16.67%)Common questions
Questions about this calculation
What is the Probability Calculator?
The Probability Calculator helps you calculate the probability of an event from favorable and total outcomes. Enter your values and select Calculate to get an instant result.
How is the result calculated?
Classical probability formula. Result is between 0 (impossible) and 1 (certain).
Can you show an example?
Example: Rolling a 6 on a fair die? — ≈ 0.1667 (16.67%).
Is my data saved when I use the Probability Calculator?
No. All calculations run locally in your browser. Your inputs and results are never uploaded, stored or shared with anyone.
Is the Probability Calculator free to use?
Yes. The Probability Calculator is completely free. No account, sign-up or payment is required. It works on mobile, tablet and desktop.
Continue calculating