IP Addressing

The IP Addressing subcategory brings together 5 free tools with no sign-up for handling addresses and subnets. The CIDR calculator, Subnet Mask, IPv4 and integer, and MTU calculator help when you prepare an addressing plan, check a range or convert a value. What is my IP rounds out the set by showing the public address of your current connection. These tools suit technicians, developers and students.

Start with IPv4 and integer when you need to turn an address into a 32-bit value. The CIDR calculator helps find the network, broadcast and host range, while Subnet Mask links a prefix and an IPv4 mask. The MTU calculator is useful when encapsulation changes the payload. What is my IP answers a quick question about the current connection. Pick the tool based on whether you convert, split, calculate or check.

How to use

  1. Start with IPv4 and integer when you only have an address and need its 32-bit value before any calculation.
  2. Then use CIDR calculator to find network, broadcast and host range, followed by Subnet Mask to link prefix and IPv4 mask.
  3. When encapsulation matters, use the MTU calculator to derive the payload and confirm the usable size.
  4. For a quick check of the current connection, open What is my IP and note the public address without confusing it with a private one.

Frequently asked questions

Which tool should I use to split a network?

The CIDR calculator is the best starting point: it finds the network, broadcast and host range. Subnet Mask complements it by converting between a prefix and an IPv4 mask. Together they help check an addressing plan.

Can I convert an IPv4 address into a number?

Yes, IPv4 and integer converts an IPv4 address into a 32-bit integer. This is useful for comparing addresses, preparing a calculation or understanding a technical representation. The conversion runs in the browser, with no sign-up.

In what order should I check an addressing plan?

Start with IPv4 and integer to set the starting value, then move to CIDR calculator for the split. Use Subnet Mask to confirm the prefix. If encapsulation changes the size, finish with the MTU calculator.

Is What is my IP only for display?

It shows the public address of your connection, which helps compare with a private address or document a test. It does not replace CIDR calculator or Subnet Mask, but it completes a quick check.

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