ToolGrid AIIPv4 Subnet Calculator
Find network address, broadcast and host count for an IPv4 CIDR block.
Runs entirely in your browser — your selected files are not uploaded by this tool. Device-provided speech voices may use online services.
About this free ipv4 subnet calculator tool
Find network address, broadcast and host count for an IPv4 CIDR block. Developer utilities inspect or transform data locally rather than contacting the address or service shown in your input. Use fictional samples while checking a format, keep credentials out of shared screenshots and validate the result against the receiving system. Successful parsing does not establish trust, security or schema correctness.
A practical example
A concrete example uses cidr: 192.168.1.10/24. The result is Network: 192.168.1.0 Broadcast: 192.168.1.255 Usable hosts: 254.
Before you rely on the result
Runs locally in your browser on the values you enter. Check results against your own system before using them in production.
Frequently asked questions
Is the ipv4 subnet calculator free to use?
Yes. The IPv4 Subnet Calculator is free, needs no account and has no usage limit beyond what your device can handle.
Are my files or numbers uploaded anywhere?
No. The IPv4 Subnet Calculator runs in your browser, so the values and files you enter stay on your device. Close the tab and nothing is kept.
What does the ipv4 subnet calculator do?
Find network address, broadcast and host count for an IPv4 CIDR block. Developer utilities inspect or transform data locally rather than contacting the address or service shown in your input. Use fictional samples while checking a format, keep credentials out of shared screenshots and validate the result against the receiving system. Successful parsing does not establish trust, security or schema correctness.
When should I double-check the result?
Runs locally in your browser on the values you enter. Check results against your own system before using them in production.
Can I share my result?
Yes. Use Copy result or Download, and on calculator-style tools use Copy share link to send someone a link that opens with the same inputs filled in.