• Subnet Calculator

  • Ex: 100.64.10.14/30, 10.0.200.1 255.255.255.240, 192.168.1.0 0.0.1.255
    Note: Non-contiguous wildcard masks are not supported.

  • Subnet Chart

  • # Subnet Mask Usable Hosts Total Addresses
    /32 255.255.255.255 1 1
    /31 255.255.255.254 2 2
    /30 255.255.255.252 2 4
    /29 255.255.255.248 6 8
    /28 255.255.255.240 14 16
    /27 255.255.255.224 30 32
    /26 255.255.255.192 62 64
    /25 255.255.255.128 126 128
    /24 255.255.255.0 254 256
    /23 255.255.254.0 510 512
    /22 255.255.252.0 1,022 1,024
    /21 255.255.248.0 2,046 2,048
    /20 255.255.240.0 4,094 4,096
    /19 255.255.224.0 8,190 8,192
    /18 255.255.192.0 16,382 16,384
    /17 255.255.128.0 32,766 32,768
    /16 255.255.0.0 65,534 65,536
    /15 255.254.0.0 131,070 131,072
    /14 255.252.0.0 262,142 262,144
    /13 255.248.0.0 524,286 524,288
    /12 255.240.0.0 1,048,574 1,048,576
    /11 255.224.0.0 2,097,150 2,097,152
    /10 255.192.0.0 4,194,302 4,194,304
    /9 255.128.0.0 8,388,606 8,388,608
    /8 255.0.0.0 16,777,214 16,777,216