Cookie Header Parser
NETParse HTTP Cookie header strings into key-value pairs.
Enter a value and click Analyze
ℹ️ About Cookie Header Parser
Cookie Header Parser is a free online network tool from Tools Coaster. Parse HTTP Cookie header strings into key-value pairs. It is handy for cookie, parse, http tasks. It runs entirely in your browser — no sign-up, no installs, and nothing you enter ever leaves your device.
📖 How to Use Cookie Header Parser
1
Enter the value
Add the IP, address, or network input required.
2
Run Cookie Header Parser
The tool computes the result instantly.
3
Read the output
Review the ranges, masks, or converted values.
4
Copy for your config
Copy the result into your network configuration.
💡 Examples
Network calculation
INPUT
Your network input→
OUTPUT
Result from Cookie Header Parser🚀 Pro Tips
✓Use it to validate config before applying changes to live equipment.
✓Combine with other network tools for end-to-end planning.
✓Works for both IPv4 and common IPv6 scenarios where supported.
✓Double-check subnet masks — an off-by-one prefix changes host counts dramatically.
✓Keep a note of reserved ranges (private, loopback) when planning addressing.