Network Calculators

Subnet Calculator

Calculate network address, broadcast address, and host range from an IP and CIDR.

IP to Binary Converter

Convert an IPv4 address to its binary representation.

File Transfer Time Calculator

Calculate how long a file will take to download or upload at a given speed.

Wildcard Mask Calculator

Convert a CIDR prefix length to its wildcard mask, used in ACLs.

Hosts per Subnet Calculator

Calculate the number of usable hosts for a given CIDR prefix length.

Network Throughput Calculator

Calculate effective throughput accounting for protocol overhead.

Packet Loss Percentage Calculator

Calculate the percentage of network packets lost in transit.

Round-Trip Latency Calculator

Calculate round-trip time from one-way network latency, or vice versa.

Bandwidth-Delay Product Calculator

Calculate the bandwidth-delay product, the ideal amount of in-flight data for a network link.

Random MAC Address Generator

Generate a random, locally-administered MAC address.

IP Range Size Calculator

Calculate how many IP addresses fall within a given range.

MTU Fragmentation Calculator

Calculate how many fragments a packet will be split into for a given MTU.

Subnet Count Calculator

Calculate how many smaller subnets fit within a larger network.

IP to Decimal Calculator

Convert an IPv4 address into its decimal (integer) representation.

MSS (Maximum Segment Size) Calculator

Calculate the Maximum Segment Size for TCP based on MTU.

Uptime Percentage Calculator

Calculate a service's uptime percentage from total time and downtime.

Allowed Downtime Calculator

Calculate the maximum downtime allowed to hit a target uptime percentage.

Packet Transmission Time Calculator

Calculate how long it takes to transmit a packet over a given bandwidth.

DNS TTL to Hours Calculator

Convert a DNS record's TTL from seconds into hours and minutes.

VPN Overhead Calculator

Calculate your effective network throughput after VPN encapsulation overhead.