Free · Everyday · Networking

IP Subnet Calculator

Calculate IPv4 network, broadcast, usable host range, mask, wildcard, and host capacity from CIDR notation.

  • Checked formula
  • Private in your browser
  • No signup
Calculator inputs

Enter your values

Result

Your calculation

Network
192.168.10.0/24
Subnet mask
255.255.255.0
Broadcast
192.168.10.255
Usable host range
192.168.10.1 to 192.168.10.254
Usable hosts
254
Wildcard mask
0.0.0.255

How to use this calculator

  1. Enter the values and choose the units that match your situation.
  2. Calculate to see the primary answer and useful conversions.
  3. Review the assumptions before using the result for a project or decision.

Private by default

Inputs and results stay in this browser tab. Bookify does not upload or store the values you enter.