Networking / FREE BROWSER TOOL
DHCP Scope Planner
Determine a DHCP address pool inside an IPv4 subnet after reserving a configurable number of addresses at the start of the usable range.
✓ Free to use✓ Runs locally✓ No account needed
Run the tool
Enter the values below to calculate or convert.
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Using the dhcp scope planner
Enter a subnet, the number of low addresses to reserve for static devices, and how many DHCP leases you want to offer.
Real-world example
Example: reserve 30 addresses in 192.168.40.0/24 and offer the next 150 addresses through DHCP.
Good to know
This is a mathematical planning aid. Configure exclusions, DHCP options, lease duration, and conflict detection on your actual DHCP server.
This tool is a planning aid, not a substitute for verifying values in vendor documentation or production configurations.