How to use IPv4 Subnet / CIDR Calculator
Calculate network, broadcast, host range, mask and usable host count from an IPv4 address and CIDR prefix.
- Enter the text, code or network information you want to process.
- Choose the options available in the tool.
- Verify the generated result and copy it when appropriate.
Inputs are processed in your browser unless the tool explicitly states that it retrieves reference data. Verify the result against your own context before making an important decision.