Permutation & Combination Calculator
Calculate permutations (nPr) and combinations (nCr) with or without repetition.
Enter Values
n = total items, r = items to choose
You Might Also Like
Explore more tools in this category
Prime Number Generator
Generate prime numbers in any range using efficient algorithms
Factorial Calculator
Calculate factorials, permutations, and combinations with steps
Perfect Square Calculator
Check if a number is a perfect square and find square roots
Perfect Cube Calculator
Check if a number is a perfect cube and find cube roots
Cube Root Calculator
Calculate cube roots with simplification and step-by-step solutions
RMS Calculator
Calculate Root Mean Square for datasets, AC voltage and current
Acceleration Calculator
Calculate acceleration using velocity, force, distance, or gravity
Dew Point Calculator
Calculate dew point, heat index, humidex, and comfort levels
Earthquake Calculator
Calculate earthquake magnitude, energy, intensity, and compare seismic events
Key Differences
🔀 Permutation
Order matters. ABC ≠ BAC
🎲 Combination
Order doesn't matter. ABC = BAC
🚫 Without Repetition
Each item used once
🔁 With Repetition
Items can be reused
Examples
Real-World Uses
🔐 Password combinations
🎰 Lottery probabilities
👥 Team selections
🎲 Game theory
📊 Statistical analysis