IP Calculator

Fast IP Subnet Calculator that takes all main formats for IP addresses and subnet-masks. It also shows the results as bindary.
Input IP-address and netmask
Result is calculated as you type. Input formats: <IP address>[ netmask|bitmask] : eg. or


Fast online IP-calculator.

Think this must be one of the fastest IP-calculators out there. It calculates the result as you type and validiates the format of the input. Test for yourself.