Quick Presets:
CIDR Notation
192.168.1.0/24
Netmask
255.255.255.0
Network Address
192.168.1.0
Broadcast Address
192.168.1.255
Usable Host Range
192.168.1.1 - 192.168.1.254
Usable Hosts
254
Total IP Addresses
256
Wildcard Mask
0.0.0.255
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How to calculate CIDR subnets
- 1Enter any IPv4 address with prefix (e.g. 192.168.1.0/24).
- 2Review calculated network, broadcast, and usable host boundaries.
- 3Click any parameter to copy it to clipboard.
RFC 1918 VPC Planning
Instant bitwise calculations performed in local browser memory.
Frequently Asked Questions
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