Probability Calculator - Instantly Compute Probability of Events

What Is a Probability Calculator?

Probability is the measure of how likely an event is to occur. Our **Probability Calculator** helps you quickly determine the probability of **single or multiple events** using probability rules and formulas.

How to Calculate Probability?

Probability is calculated using the formula:

Probability (P) = (Number of Favorable Outcomes) ÷ (Total Number of Possible Outcomes)

The result is a value between **0** (impossible) and **1** (certain), or it can be expressed as a percentage.

Types of Probability Calculations

Our **Probability Calculator** allows you to compute:

• ✅ Single Event Probability - The likelihood of one event happening.
• ✅ Multiple Independent Events - Probability of two or more independent events occurring.
• ✅ Conditional Probability - The probability of an event given another event has occurred.
• ✅ Bayes’ Theorem - Used to update probabilities based on new evidence.

Example Probability Calculations

1. Single Event Probability

If you roll a six-sided die, the probability of rolling a **4** is:

P(4) = 1 ÷ 6 ≈ 0.1667 (or 16.67%)

2. Multiple Independent Events

If you flip a fair coin twice, the probability of getting **two heads** is:

P(H and H) = (1/2) × (1/2) = 1/4 = 25%

3. Conditional Probability

If 70% of students pass an exam, and 60% of those students receive an A, the probability of a student both passing and receiving an A is:

P(A | Pass) = P(A and Pass) ÷ P(Pass) P(A | Pass) = 0.6 × 0.7 = 0.42 (or 42%)

Why Use Our Probability Calculator?

• 🔹 Fast & Accurate - Instantly compute probabilities for any event.
• 🔹 Easy to Use - No complex formulas required.
• 🔹 100% Free - No signup or registration needed.
• 🔹 Useful for Statistics & Probability Studies - Perfect for students, researchers, and professionals.

Common Uses of Probability Calculations

• 🎲 **Gambling & Gaming** - Predict chances of winning in dice rolls, card games, and lotteries.
• 📊 **Statistics & Research** - Analyze data probabilities in scientific studies.
• 🏦 **Finance & Investments** - Assess risk probability in stock market predictions.
• ⚽ **Sports Analytics** - Calculate win/loss probabilities in games.

Try Our Probability Calculator Now!

Simply enter your event details, click "Calculate," and get precise probability results instantly. Perfect for students, professionals, and statisticians.

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