🎲
Probability Calculator
Calculate probability for single events, combined events (AND, OR), and complements. Helpful for math homework, statistics, decisions.
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🎯 Single Event Probability
Probability
16.67%
Decimal
0.1667
Odds
1:5
Complement
83.33%
🎲 Two Events Combined
P(A AND B)
25.00%
0.2500
P(A OR B)
75.00%
0.7500
◆ How it works
Probability Calculator — 3 simple steps
01
Single event
Favorable / Total outcomes
02
Two events
P(A and B), P(A or B)
03
See odds
Both ratio and percentage
◆ FAQ
Common questions.
P(A and B) formula?
+
P(A or B) formula?
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