Probability Calculator

100% In-Browser PrivacyFull View

Calculate the likelihood of a single outcome (e.g. rolling a specific number on a die).

Favorable Outcomes (A)

Total Possible Outcomes (S)

Probability P(A)0.500050.00%

Complement P(A')0.500050.00%

Odds in Favor3 : 3

Odds Against3 : 3

Calculate joint, union, and exclusive compound probabilities for two separate events.

Probability of Event A: P(A)

Probability of Event B: P(B)

Both Occur: P(A ∩ B)0.125012.50%

At Least One: P(A ∪ B)0.625062.50%

Neither Occurs: P(A' ∩ B')0.375037.50%

🔒 Client-side only • Zero data uploaded⚡ Free & Private Tools by Yuitility