Small office
- Input
- Office:50 · Guest:20 · Servers:10
- Expected output
- Sub-redes alocadas por demanda
Avoids reserving a full /24 for each group.
vlsm calculator
VLSM calculator
Here the calculator goes straight into the VLSM slice, without cluttering the screen with the rest of the flow when the intent is already clear.
Continue in the tool
Open full toolWhen to use VLSM
- VLSM lets you split a larger block into smaller subnets with different sizes according to host requirements.
- This reduces waste and improves planning for LANs, guests, servers and special segments.
VLSM examples
Mixed segments
- Input
- Users:120 · VoIP:30 · IoT:14
- Expected output
- Divisão progressiva do bloco
Great for planning study.
Full tool FAQ
Yes. It helps visualize the main subnetting outputs for both IPv4 and IPv6, including split scenarios and more detailed planning workflows.
Frequently asked questions
Does VLSM only work in IPv4?
The concept is classic in IPv4. In IPv6 planning usually follows other patterns.
Does the calculator sort by demand?
Yes. The calculation prioritizes larger networks first to reduce waste.