VLAN Capacity Calculator
The VLAN capacity calculator answers a design question that comes up in every network build: given a number of VLANs and an average number of devices per VLAN, what subnet size should you allocate?
Add a growth factor and the calculator accounts for future endpoints, then returns the required prefix length, its subnet mask, and the number of usable hosts per subnet - so you can size every VLAN once and stop guessing.
VLAN Capacity Calculator
Determine the subnet size you need for a given number of VLANs and devices.
Enter values above to see results.
Read More
Guides that go deeper on the same topic.
Homelab VLANs: A Beginner's Segmentation Guide
New to VLANs? Learn what VLAN segmentation is, why your homelab needs it, how to plan your first layout, and how to keep it documented as your lab grows.
VLAN Management Best Practices: From Small Office to Multi-Site Enterprise
VLAN management scales from small offices to multi site enterprises. Learn practical strategies for design, naming, trunking, security isolation, and keeping VLAN sprawl under control as your network grows.
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