Example
Input: 10k Items, 32-bit
Result: < 0.1%
What is Hash Collision Probability?
Uses the Birthday Paradox logic to estimate collision chance in a set of random values.
How it Works
1. Enter 'Number of Items'.
2. Input 'Bit Depth' (e.g. 32, 64, 128).
3. View Probability.
FAQ
What is a collision?
Two different inputs producing the same hash/ID.
Birthday Paradox?
In a group of 23 people, there's a 50% chance of a shared birthday.
Is 32-bit safe?
Only for very small sets (<50k items).
UUID safety?
Virtually zero collision risk (128-bit).
Short IDs?
Higher risk; requires collision checks.
Conclusion
For small datasets, 32-bit hashes might suffice, but as you scale, collisions become mathematically inevitable. Use UUIDs (128-bit) for globally unique identifiers to make this risk negligible.