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↔️ Calculate IPv4 range boundaries

IP Range Calculator

Calculate the size and boundaries of an IPv4 address range, compare start and end addresses, and review the inclusive address count.

Updated July 25, 2026✓ Free to useLocal browser processing
🔒 Local browser processing · No input upload

Use the IP Range Calculator

Local-onlyRuns in your browser. The value you enter stays on this device.
About this utility

How does the IP Range Calculator work?

IP Range Calculator performs address or network math directly in the browser. Enter a starting and ending IPv4 address, or the range format requested by the tool; the tool can validate and calculate without sending the entered value to a lookup server.

Use the result for the normalized range boundaries and number of addresses included. This is especially useful when you need quick network context without a command-line calculator. An IP range calculation does not indicate which addresses are usable, online, assigned, or permitted by a firewall or routing policy.

Instant local calculation

Validate or calculate directly in the browser without a server lookup.

Normalized network details

Present address data in a consistent format that is easier to compare.

Scope-aware result

Explain what the calculation proves and what it cannot tell you about real connectivity.

Best practices

How to get a useful IP Range Calculator result

  1. Enter a starting and ending IPv4 address, or the range format requested by the tool exactly and remove surrounding punctuation copied from logs when necessary.
  2. Confirm whether you are working with IPv4 or IPv6 before comparing ranges or subnet results.
  3. Use the calculated classification or range as network context, not as proof that an address is online or trusted.
  4. When changing a real network, compare the result with router, DHCP, firewall, and routing configuration before applying it.

Important: An IP range calculation does not indicate which addresses are usable, online, assigned, or permitted by a firewall or routing policy.

Common use cases

When to use the IP Range Calculator

Access-control planningCount addresses before writing an allowlist or denylist.
DHCP planningCompare a planned pool start and end address.
Inventory reviewCalculate how many addresses a documented range contains.
Migration workCheck that old and new address ranges have the expected boundaries.
Continue troubleshooting
Related utilityMAC Address LookupNormalized address details, local/universal flags, and vendor data when the oui is present.Related utilityWi-Fi Channel CalculatorChannel information and practical overlap/context guidance for that band.Related utilityRouter IP FinderThe gateway address extracted from the pasted network configuration.

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Questions and answers

Frequently Asked Questions

What does the IP Range Calculator tell me?

It returns the normalized range boundaries and number of addresses included. An IP range calculation does not indicate which addresses are usable, online, assigned, or permitted by a firewall or routing policy.

What should I enter in the IP Range Calculator?

Use a starting and ending IPv4 address, or the range format requested by the tool. Enter only the information needed for the check and verify it before running the tool.

Does the IP Range Calculator send my input anywhere?

The interactive analysis runs in your browser, so the value you enter is not sent to TipsMake for processing.

How accurate is the IP Range Calculator?

The tool is designed to report the calculation or observation available to its execution method. An IP range calculation does not indicate which addresses are usable, online, assigned, or permitted by a firewall or routing policy.