Key System Expansion Calculator
Maximum key combinations from pin count and depths.
Inputs
Results
Effective key capacity
60,505
Theoretical combinations1,000,000
Current utilization (%)0.1%
After expansion (%)0.1%
Remaining capacity60,425
Years until full2,014.2
Cross-key risk (1-5)1
Expansion cost$840
Upgrade Recommended0
How to Use This Calculator
- Enter the current number of keys and cylinders in the master key system.
- Set the number of new openings and key holders to add.
- Select the key blank series and master key hierarchy levels.
- Review the additional keys and cylinders required and whether the current system has expansion capacity.
- If the system is at capacity, plan a system re-key or upgrade to a higher-security interchangeable core system.
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