IPv6/CIDR calculator
IPv6/CIDR calculator lets you calculate IPv6 network ranges and exact 128-bit address totals in your browser.
IPv6 notation converter
IPv6 notation converter lets you convert IPv6 canonical, expanded, hexadecimal, and 128-bit integer forms in your browser.
IPv6 notation converter
⌂ Inputs and results stay in this browser and are not automatically stored or sent.
Waiting for input
Input and conditions
Calculations use your input only; no network queries or configuration changes.
Output
Waiting for input
Complete text result
How to use
Enter an IPv6 address and compare expanded and compressed forms.
Inspect which zero groups :: replaces to see whether different spellings represent the same value. A valid conversion does not establish that the address exists or is reachable.
Examples
2001:db8::1Principles and limits
Each input is limited to 1,048,576 bytes, output to 33,554,432 bytes, and processing to 5,000 ms. Input is never silently truncated.
Guides
Related tools
IP integer converter
IP integer converter lets you convert IPv4 or IPv6 addresses to and from unsigned integers and hex in your browser.