IP Subnet Calculator (IPv4 & IPv6)
Calculate IPv4 and IPv6 subnets: network, broadcast, host range, masks, CIDR splits, and binary breakdown. Free, fast, and works entirely in your browser with no sign-up required.
IP Subnet Calculator
Calculate IPv4 & IPv6 subnets, network / broadcast addresses, host ranges, masks, and CIDR splits.
IPv4 Input
Network Details
192.168.1.0192.168.1.255192.168.1.1192.168.1.254255.255.255.00.0.0.255256254Binary Representation
11000000.10101000.00000001.00001010Subnet Mask:11111111.11111111.11111111.00000000Network:11000000.10101000.00000001.00000000Subnetting
| # | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|
| 1 | 192.168.1.0/26 | 192.168.1.1 | 192.168.1.62 | 192.168.1.63 | 62 |
| 2 | 192.168.1.64/26 | 192.168.1.65 | 192.168.1.126 | 192.168.1.127 | 62 |
| 3 | 192.168.1.128/26 | 192.168.1.129 | 192.168.1.190 | 192.168.1.191 | 62 |
| 4 | 192.168.1.192/26 | 192.168.1.193 | 192.168.1.254 | 192.168.1.255 | 62 |
Showing first 4 subnets.
Frequently Asked Questions
What does it compute?
IPv4 and IPv6 network details: network address, broadcast, usable host range, subnet mask, wildcard mask, CIDR notation, and binary representation.
Does it support IPv6?
Yes. Enter any IPv6 address (with or without :: compression) and a prefix length 0-128 — the tool shows expanded address, network, first/last address, and total count computed with BigInt for 128-bit precision.
Can I split a network?
Yes. After calculating an IPv4 network, specify a longer target prefix (e.g. /24 into /26) and the tool lists the first 10 resulting subnets.
Is the IP Subnet Calculator (IPv4 & IPv6) free to use?
Yes, the IP Subnet Calculator (IPv4 & IPv6) is 100% free with no registration, no hidden fees, and no usage limits. All processing happens locally in your browser, ensuring complete privacy.
Is my data safe with this tool?
Absolutely. The IP Subnet Calculator (IPv4 & IPv6) processes everything client-side in your browser. No data is uploaded to or stored on any server. Your content remains private on your device at all times.
Does the IP Subnet Calculator (IPv4 & IPv6) work on mobile devices?
Yes, the IP Subnet Calculator (IPv4 & IPv6) is fully responsive and works on smartphones and tablets. You can use it on any device with a modern web browser -- no app download required.
Do I need to create an account to use this tool?
No account or registration is needed. Simply open the IP Subnet Calculator (IPv4 & IPv6) in your browser and start using it immediately. There are no sign-up walls or usage restrictions.
How do I use the IP Subnet Calculator (IPv4 & IPv6)?
Simply enter your input in the provided field, adjust any settings to your preference, and the tool will process it instantly. You can then copy the result to your clipboard or download it.
Which browsers are supported?
The IP Subnet Calculator (IPv4 & IPv6) works in all modern browsers including Chrome, Firefox, Safari, Edge, and Opera. For the best experience, use the latest version of your preferred browser.
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About IP Subnet Calculator (IPv4 & IPv6)
IP Subnet Calculator (IPv4 & IPv6) is a free, browser-based tool in our Utility Tools collection. Everything runs locally on your device — no uploads, no sign-up, and your data stays private.