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VLSM Calculator | Variable Length Subnet Mask

VLSM calculator that splits one network into right-sized subnets from your host counts. Shows CIDR, mask, host ranges, broadcast and wasted IPs. Free. Designed specifically for developers and professionals, this free online networking runs entirely in your browser to process tasks quickly and securely. Enjoy unlimited usage with no data tracking and no registration required.

Also known as: vlsm calculator · variable length subnet mask calculator · vlsm subnetting calculator · subnet allocation calculator · cidr block allocator · vlsm chart generator · ip subnet planner · subnetting practice calculator

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Frequently asked questions

What is VLSM Calculator used for?

VLSM calculator that splits one network into right-sized subnets from your host counts. Shows CIDR, mask, host ranges, broadcast and wasted IPs. Free.

Is VLSM Calculator free to use?

Yes. VLSM Calculator is completely free with no usage limits, and there is no paid tier required to use it.

Do I need an account to use VLSM Calculator?

No. VLSM Calculator works immediately in your browser with no signup, login, or email address required.

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