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Two developer & design tools, side-by-side. See which fits your task.
Developer & Design
Calculate network address, broadcast, host range, subnet mask, and number of hosts from IP + CIDR.
Open Subnet CalcYour specific task is calculate network address, broadcast, host range, subnet mask, and number of hosts from ip + cidr. Open the page, drop your input, get the result — typically under a second.
Your goal is compress full ipv6 addresses to shortest notation. Same approach: paste in, get the result, move on. No account, no upload.
Both tools live in the same category, so the choice depends on the exact subtask. Subnet Calc focuses on calculate network address, broadcast, host range, subnet mask, and number of hosts from ip + cidr; IPv6 Compress focuses on compress full ipv6 addresses to shortest notation. Try whichever description matches your goal more closely — they're both free.
Yes — both tools are free for unlimited personal use. The Pro plan unlocks higher limits and batch features but the core functionality stays free forever.
Absolutely. Many users chain multiple tools together — process a file with one, then feed the result into another. Nothing is uploaded, so chaining is essentially instant.
No. Both Subnet Calc and IPv6 Compress work without signup. We only ask for an email if you decide to subscribe to a paid plan.