CIDR Calculator
Turn an IPv4 address and prefix into network, broadcast, mask, host range, and capacity details without leaving the browser.
Last updated: March 13, 2026
Interactive tool
The live form, validation, and result state for CIDR Calculator load after the page scripts run. The content below summarizes how the tool works and links to related pages in the catalog.
Calculate IPv4 CIDR subnet details from an IP address and prefix length, including network address, broadcast address, subnet mask, host range, usable hosts, and address classification.
How to use CIDR Calculator
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1
Enter your inputs into the CIDR Calculator form.
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2
Adjust optional settings so the scenario matches your real-world case.
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Review the result, then tweak one variable at a time to compare outcomes.
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Keep your best scenario as a baseline for future decisions.
Technical utilities provide rapid validation checks and should be paired with environment-specific testing.
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