IP Address Converter — IPv4 / IPv6
Convert an IPv4 or IPv6 address: decimal, hex, binary, compressed/expanded IPv6, mapped forms.
Developer notes
IPv4 input can be dotted, uint32, hex, or binary octets. IPv6 can be compressed, expanded, or both. Mapped addresses are optional. 64 KiB limit.
Options
- IPv6 display
- compress, expand, or both.
- Include mapped
- Shows IPv4-mapped / embedded forms when relevant.
When teams pick this route
Compare compressed vs expanded IPv6. Get the integer form of an IPv4 for a text ACL.
Worked examples
IPv4 forms
Before
After
IPv6 compress/expand
Before
After
Related networking tools
For bases 2–36, use number-base-converter. Back to the networking tools hub.
IP converter FAQ
Local address forms
When should I use the number-base converter instead?
To convert an integer between bases 2–36 (hex of a number, binary of a value), use number-base-converter. Networking tools compute subnets and CIDRs, not general base conversion.
Are IP addresses uploaded?
No. All math runs locally in your browser. Nothing is uploaded to FastMinify.
What is the size limit?
64 KiB (UTF-8) for the combined input fields of each tool.
Networking / IP
CIDR, subnets, and IPv4/IPv6 helpers — in your browser.
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