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IP Address Format Converter online, free
Convert IP addresses between IPv4, IPv6, binary, decimal, and hexadecimal.
- Runs in your browser — no upload
- Free, no sign-up, no watermark
- TXT
How to use IP Address Format Converter · IP Address Format Converter — frequently asked questions
How to use IP Address Format Converter
- 1
Add your TXT file
Drop a file on the page, paste it, or click Select Files. Nothing is uploaded — it opens straight in your browser.
- 2
Fine-tune the settings
The defaults already suit most files; change them only if you need to.
- 3
Run IP Address Format Converter
Press the start button. Processing happens on your device, usually in seconds.
- 4
Download the result
Save the finished file, or continue with another tool without downloading in between.
What IP Address Format Converter can do
- Private by design — files are processed in your browser and never uploaded
- Free with no sign-up, no watermark and no daily limit
IP Address Format Converter — frequently asked questions
Which IP formats can this tool convert between?
The converter handles IPv4 dotted-decimal, 32-bit integer decimal, binary, octal, hexadecimal, IPv4-mapped IPv6, and standard compressed or expanded IPv6 addresses.
How does IPv4 to IPv6 mapping work?
IPv4 addresses can be mapped into IPv6 address space using the `::ffff:0:0/96` prefix format (e.g. `192.168.1.1` becomes `::ffff:192.168.1.1` or `::ffff:c0a8:0101`).
Does the converter identify special or reserved IP ranges?
Yes. It identifies private subnets (RFC 1918), loopback, multicast, link-local, and carrier-grade NAT (CGNAT) address ranges.
Does the tool contact my network or perform reverse DNS?
No. All bitwise calculations, binary conversions, and prefix expansions are computed client-side using JavaScript in your browser.
Can I use this tool offline?
Yes. Once loaded in your browser or our desktop/mobile app, the IP format converter functions fully offline with no internet access required.
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