Subnet calculator
Subnet calculator — IPv4 / CIDR 0–32. Processed on your device.
Input
Example only; use “Try an example” to fill it in.
IPv4 / CIDR 0–32
Result —
Processed on your device · Free to use · No sign-up
Example input and output
Input
192.168.1.10/24
Result
{
"address": "192.168.1.10",
"prefix": 24,
"mask": "255.255.255.0",
"network": "192.168.1.0",
"broadcast": "192.168.1.255",
"first": "192.168.1.1",
"last": "192.168.1.254",
"addresses": 256,
"hosts": 254
}How to use
- Input
- Convert
- Copy result
Input format & limitations
Subnet calculator — IPv4 / CIDR 0–32. Processed on your device.
Frequently asked questions
Do I need to upload data or sign up?
Local tools do not send input. IP and DNS lookups send the query and connection IP to the listed third parties only after a click.