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VLAN Capacity Calculator

Plan VLAN deployment based on user count and growth projections

Total number of endpoints (workstations, phones, printers, IoT devices) that need network access across all VLANs.
Recommended maximum hosts per VLAN. Best practice is 200-500 hosts per VLAN to limit broadcast domain size. Smaller VLANs reduce broadcast traffic.
Percentage of additional capacity to plan for future growth. 20-30% is typical for a 3-5 year plan.
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VLAN Planning Results

Total Users (with growth)
Recommended VLANs
Actual Users per VLAN
Recommended Subnet
Usable IPs per Subnet
Total IPs Needed
Trunk Overhead per VLAN
VLAN ID Range Suggestion
References:
IEEE 802.1Q - VLAN Tagging (4094 max VLANs)
Best practice: 200-500 hosts per VLAN
802.1Q tag adds 4 bytes overhead per frame on trunk links