IPNetwork calculator
IPv4 Subnet Calculator
Enter an IPv4 address and CIDR prefix to inspect the corresponding subnet range.
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Live calculator
Browser-basedEnter your values
Network range192.168.1.0/24
254 usable hosts
- Subnet mask
- 255.255.255.0
- First host
- 192.168.1.1
- Last host
- 192.168.1.254
- Broadcast
- 192.168.1.255
- Total addresses
- 256
Nothing is uploaded. Results update locally as you type.
How it works
Transparent math, not a mystery result.
NetCalcKit uses standard decimal network units unless the page explicitly says otherwise. The calculator updates in your browser and labels ideal estimates separately from real-world conditions.
Common questions
Good to know.
How are /31 and /32 handled?+
/31 is treated as a two-address point-to-point network, while /32 represents one host address.
What is CIDR notation?+
The number after the slash shows how many leading bits form the network prefix.
Understand the result