Subnet Calculator
Quickly calculate network boundaries and host ranges. Runs 100% in your browser — zero data is sent to a server.
Privacy: All calculations run 100% in your browser using built-in JavaScript — no
data is sent to any server or third-party service.
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IP Address
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Network Address
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Usable Host Range
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Broadcast Address
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Total Hosts
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Usable Hosts
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Subnet Mask
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Wildcard Mask
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Binary Subnet
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