Probability Calculator
Calculate probability, combinations, permutations, and binomial distributions.
Probability Calculator
Probability
30.00%
3 out of 10
PProbability
0.3000
%Percentage
30.00%
+Odds For
0.43:1
1-PComplement
70.00%
Formulas
- P(A) = favorable / total
- C(n,r) = n! / (r!(n-r)!)
- P(n,r) = n! / (n-r)!
- Binomial: C(n,k) × p^k × (1-p)^(n-k)
💡
Help us improve!
How would you rate the Probability Calculator?
Calcolatrici Correlate
Editorial Note
MyCalcBuddy Editorial Team
This page is maintained as an educational calculator reference.
📚
Formula Source: Handbook of Mathematical Functions
by Abramowitz & Stegun
🔄Last reviewed: May 2026
✓Formula checks are based on standard references and internal QA review.