IP Subnet Calculator

Calculate network address, broadcast, usable hosts, and wildcard mask from IP and CIDR notation.

Usable Hosts

254

/24 network

Subnet Details

Network Address192.168.1.0
Broadcast Address192.168.1.255
Subnet Mask255.255.255.0
Wildcard Mask0.0.0.255
First Usable Host192.168.1.1
Last Usable Host192.168.1.254
Usable Hosts254
CIDR Notation192.168.1.0/24

Binary Subnet Mask

Mask11111111.11111111.11111111.00000000

Common Subnets Reference

/8255.0.0.0 (16,777,214 hosts)
/16255.255.0.0 (65,534 hosts)
/24255.255.255.0 (254 hosts)
/25255.255.255.128 (126 hosts)
/26255.255.255.192 (62 hosts)
/27255.255.255.224 (30 hosts)
/28255.255.255.240 (14 hosts)
/30255.255.255.252 (2 hosts)

Subnet calculations are based on IPv4 addressing. Usable host count excludes the network address and broadcast address for subnets larger than /30.

Use the IP Subnet Calculator above to calculate your results. Enter your values and see instant results — all calculations run in your browser.

Disclaimer: This calculator is for informational purposes only and does not constitute tax, financial, or legal advice. Results are estimates based on the information you provide and current rates. Always consult a qualified tax professional or financial advisor for advice specific to your situation.

You might also need

Password Strength Checker

Check password strength, entropy, and estimated crack time. Get suggestions for stronger passwords.

Download Time Calculator

Estimate file download time at different connection speeds. Compare across 10Mbps to 1Gbps.

Screen Size Calculator

Calculate TV or monitor dimensions from diagonal size and aspect ratio. Find optimal viewing distance.