Technology & Computing
IPv4 CIDR Subnet Calculator
Work out the subnet mask, wildcard mask, usable hosts and broadcast range for any IPv4 CIDR prefix.
Your inputs
Change any value to update the result instantly.
Usable host addresses
254 usable hosts
Subnet mask (as number of bits)
24
Network address
3,23,22,35,776
Broadcast address
3,23,22,36,031
Total addresses in block
256
Equivalent /24 subnets
1
Network: 192.168.1.0 · Mask: 255.255.255.0 · Wildcard: 0.0.0.255 · Broadcast: 192.168.1.255
Formula and working
Usable hosts = 2^(32 − prefix) − 2 (network + broadcast reserved); Mask = 32 bits set from the left
- 1
Collect the inputs
First octet = 192; Second octet = 168; Third octet = 1; Fourth octet = 0; CIDR prefix length (/n) = 24
- 2
Apply the formula
Usable hosts = 2^(32 − prefix) − 2 (network + broadcast reserved); Mask = 32 bits set from the left
- 3
Result
Usable host addresses = 254 usable hosts
Frequently asked questions
Important limitation
This is an educational estimate based only on the values and formula shown. Verify current rates, rules, units, and professional standards before relying on the result. It is not personalized financial or investment advice.
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