Networking Tools

Free online network tools: what is my IP address, subnet and CIDR calculator, IP address converter and download time calculator.

4 tools

Find your public IP address, calculate subnets from a CIDR prefix, convert IPv4 addresses between decimal, binary and hex, and estimate download time from file size and connection speed.

Calculations run in your browser. Only the What Is My IP tool contacts our server, to show you your own address.

Bandwidth / Download Time Calculator Networking Tools Estimate how long a file will take to download at a given connection speed… IP Address Converter Networking Tools Convert an IPv4 address between dotted decimal, binary, hexadecimal, and 32-bit decimal — instantly,… Subnet Calculator (CIDR) Networking Tools Calculate network address, broadcast address, subnet mask, and usable host range from an IP… What Is My IP Networking Tools See your public IP address, browser user agent, and screen resolution at a glance.

Frequently asked questions

Why does my public IP differ from my device IP?

Your router uses a private address on your network and presents a public one to the internet.

What does /24 mean?

It says the first 24 bits are the network part, leaving 8 bits, or 254 usable addresses, for hosts.

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