Subnet Calculator
Calculate network address, broadcast address, usable host range, wildcard mask and CIDR details from an IPv4 address and subnet mask.
Hit Calculate to see the subnet range
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Your explanation appears here
The calculation uses IPv4 integer arithmetic in your browser. No network request or API key is used.
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Preview how changing the prefix length affects host capacity and range.
Calculate your baseline first
It converts the IPv4 address and subnet mask into 32-bit values. A bitwise AND gives the network address, and the inverted mask identifies the broadcast address and host range.
A subnet mask such as 255.255.255.0 marks the network bits in dotted decimal form. CIDR writes the same mask as a prefix length, such as /24.
Traditional IPv4 subnets reserve the network and broadcast addresses. A /31 is commonly used for point-to-point links, while /32 represents a single host route rather than a normal multi-host subnet.
Results are generated locally in your browser from IPv4 subnet arithmetic and are for informational purposes only. Confirm production network plans against your router, firewall, cloud provider and addressing policy before deployment. VisionVix accepts no liability for configuration decisions based on this output.
