Converters for IPv4 Network and IP address

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Netmask dotted decimal notation to CIDR notation (bits format)



result:


Netmask in CIDR notation to dotted decimal notation

Mask: /

result:


subnet sizes: CIDR mask -- dotted decimal mask -- amount of usable host addresses



Class C subnet calculator (sub-divide a /24 net into smaller nets)

number of subnets to create:

result:
cidr mask:
dotted dec. mask:
usable host addresses per subnet:
addresses in each subnet:


Net planing: Number of required host addresses to netmask

number of host addresses needed:

result:
cidr mask:
dotted dec. mask:
number of usable addresses:


Net planing: Network mask to number of usable host addresses

Mask: /

result:
Usable amount of addr:
Total number of addr:
Netmask in dotted decimal format:


Dotted decimal IP-address or mask to binary and hex



result:
Bin:
Hex:


Hex IP-address or mask to dotted decimal



result:

dotted decimal:
Bin:


IP-address bit-complement (inverted IPv4 addr)

result:



Written by Guido Socher, MIT license