IP Subnet Calculator


IP Address  i.e. 192.168.0.10
IP Mask  i.e. 255.255.255.0 OR 24

About IP Calculator

IPCalc has been built based on Linux utility called sipcalc with a few midifications. Use IP Subnet Calculator by intecca to quickly determine within your browser where your IP address belongs on TCP/IP network. Enter the IP address of interest and mask in either "/24" or "255.255.255.0" format and click Submit.

Network Mask Cheat Sheet

Dotted Mask Mask Bits Usable Hosts Hex Mask Bitmap Mask Class
0.0.0.0 /0 4,294,967,295
0
00000000.00000000.00000000.00000000
-
128.0.0.0 /1 2,147,483,646 80000000 10000000.00000000.00000000.00000000
-
192.0.0.0 /2 1,073,741,822 C000000 11000000.00000000.00000000.00000000 -
224.0.0.0 /3 536,870,910 E000000 11100000.00000000.00000000.00000000 -
240.0.0.0 /4 268,435,454 F0000000 11110000.00000000.00000000.00000000 -
248.0.0.0 /5 134,217,726 F8000000 11111000.00000000.00000000.00000000 -
252.0.0.0 /6 67,108,862 FC000000 11111100.00000000.00000000.00000000 -
254.0.0.0 /7 633,554,430 FE000000 11111110.00000000.00000000.00000000 -
255.0.0.0 /8 16,777,214 FF000000 11111111.00000000.00000000.00000000 A
255.128.0.0 /9 8,388,606 FF800000 11111111.10000000.00000000.00000000 A
255.192.0.0 /10 4,194,302 FFC00000 11111111.11000000.00000000.00000000 A
255.224.0.0 /11 2,097,150 FFE00000 11111111.11100000.00000000.00000000 A
255.240.0.0 /12 1,048,574 FFF00000 11111111.11110000.00000000.00000000 A
255.248.0.0 /13 524,286 FFF80000 11111111.11111000.00000000.00000000 A
255.252.0.0 /14 262,142 FFFC0000 11111111.11111100.00000000.00000000 A
255.254.0.0 /15 131,070 FFFE0000 11111111.11111110.00000000.00000000 A
255.0.0.0 /16 65,534 FFFF0000 11111111.11111111.00000000.00000000 B
255.255.128.0 /17 32,766 FFFF8000 11111111.11111111.10000000.00000000 B
255.255.192.0 /18 16,382 FFFFC000 11111111.11111111.11000000.00000000 B
255.255.224.0 /19 8,190 FFFFE000 11111111.11111111.11100000.00000000 B
255.255.240.0 /20 4,094 FFFFF000 11111111.11111111.11110000.00000000 B
255.255.248.0 /21 2,046 FFFFF800 11111111.11111111.11111000.00000000 B
255.255.252.0 /22 1,022 FFFFFC00 11111111.11111111.11111100.00000000 B
255.255.254.0 /23 510 FFFFFE00 11111111.11111111.11111110.00000000 B
255.255.255.0 /24 254 FFFFFF00 11111111.11111111.11111111.00000000 C
255.255.255.128 /25 126 FFFFFF80 11111111.11111111.11111111.10000000 C
255.255.255.192 /26 62 FFFFFFC0 11111111.11111111.11111111.11000000 C
255.255.255.224 /27 30 FFFFFFE0 11111111.11111111.11111111.11100000 C
255.255.255.240 /28 14 FFFFFFF0 11111111.11111111.11111111.11110000 C
255.255.255.248 /29 6 FFFFFFF8 11111111.11111111.11111111.11111000 C
255.255.255.252 /30 2 FFFFFFFC 11111111.11111111.11111111.11111100 C
255.255.255.254 /31 2* FFFFFFFE 11111111.11111111.11111111.11111110 C
255.255.255.255 /32 1** FFFFFFFF 11111111.11111111.11111111.11111111 C
* in /31 networks we can borrow network and broadcast addresses and use them for hosts. /31 networks are used for router point-to-point connections which do not require broadcast or network addresses.
** in /32 networks there is only 1 IP address which can acts as network, broadcast and single host address, all at the same time.

IP Calculator Results Will Contain

  • Host address in dot-delimited format i.e. 192.168.1.100
  • Host address in decimal format i.e. 3232235876
  • Host address in hexadecimal format i.e. C0A80164
  • Network address. The "ground zero" address for your entire network, i.e. 192.168.0.0
  • Coma-delimited network mask, i.e. 24
  • Hexadecimal netowrk mask, i.e. FFFFFF00
  • Network broadcast address, i.e. 192.168.1.255
  • Cisco wildcard mask, i.e. 0.0.0.255
  • Total amount of addresses on the network, i.e. 256
  • A range of addresses on the network, including the address of network itself and broadcast address, i.e. 192.168.1.0 - 192.168.1.255
  • A range of usable addresses on the network, excluding the address of network and broadcast address, i.e. 192.168.1.1 - 192.168.1.254