Networking Calculator

  • Data Transfer Rate Converter
    Convert data transfer speed between bps, kbps, Mbps, Gbps, MB/s, GB/s and binary kibi/mebi/gibi units instantly. SI (1000) and IEC (1024) supported.
  • IP Address Range to CIDR Calculator
    Convert a start and end IPv4 address range into the smallest CIDR prefix block. Get the /prefix, block size, and address count instantly.
  • IP Subnet & Host Count Calculator
    Calculate usable hosts, subnet mask, wildcard mask and total addresses from any IPv4 CIDR prefix (/0 to /32). Free subnetting tool.
  • Network & Broadcast Address Calculator
    Free IPv4 network and broadcast address calculator. Enter an IP and CIDR prefix to get the network, broadcast, subnet mask, host range and address count.
  • IP Subnet Mask Calculator
    Free IPv4 subnet calculator. Enter an IP and CIDR prefix to get the subnet mask, network & broadcast address, usable host count, and full host range.
  • CIDR to Subnet Mask Calculator
    Convert any CIDR prefix length (/0 to /32) into its dotted-decimal subnet mask, wildcard mask, total addresses, and usable host count instantly.
  • IP Address to Binary Calculator
    Convert any IPv4 address to binary, a 32-bit decimal integer, and hexadecimal. Enter four octets (0-255) for instant dotted-binary output.
  • Data Storage Conversion Calculator
    Convert between bytes, KB, MB, GB, TB and PB using binary (1024) or decimal (1000) systems. Fast, accurate data storage unit converter.
  • dBm to Watts Calculator
    Convert dBm to watts and milliwatts instantly. Enter a power level in dBm to get the equivalent power in W using P = 10^((dBm−30)/10).
  • Hosts per Subnet Calculator
    Calculate the maximum usable hosts per IPv4 subnet from the prefix length using 2^(32−prefix) − 2. Instant CIDR host count for any /n.
  • VoIP Bandwidth Calculator
    Calculate VoIP bandwidth per call and total for concurrent calls. Factors in codec bitrate, packetization interval and IP/UDP/RTP header overhead.
  • Free Space Path Loss Calculator
    Calculate Free Space Path Loss (FSPL) in dB from distance (km) and frequency (MHz). Uses the standard 32.44 constant RF link-budget formula.
  • VLSM Calculator
    Free VLSM calculator: enter a base network and host requirements to get optimal subnets, prefix lengths, usable ranges, and broadcast addresses.
  • Data Transfer Rate Converter
    Convert data transfer rates between bps, Kbps, Mbps, Gbps, and B/s, KB/s, MB/s, GB/s instantly. Free online bandwidth and speed unit converter.
  • Concurrent Users Bandwidth Calculator
    Calculate the bandwidth available per user when a connection is shared. Enter total Mbps and the number of concurrent users to get per-user Mbps and Kbps.
  • Usable IP Address Count Calculator
    Calculate the number of usable IPv4 host addresses for any subnet prefix (/0 to /32) using usable = 2^(32 − prefix) − 2.
  • Watts to dBm Calculator
    Convert power in watts to dBm instantly. Free Watts to dBm calculator using dBm = 10·log10(W / 0.001) for RF, antenna, and signal power conversions.
  • RF Link Budget Calculator
    Calculate received RF signal power (dBm) from transmit power, antenna gains, path loss, and system losses. Free link budget calculator with EIRP.
  • Wildcard Mask Calculator
    Convert a subnet mask or CIDR prefix to its wildcard (inverse) mask. Each octet = 255 − mask octet. Perfect for Cisco ACLs and OSPF.
  • TCP Throughput Calculator
    Calculate maximum TCP throughput from window size and round-trip time (RTT). Free bandwidth-delay product tool in Mbps, Kbps and bps.
  • EIRP Calculator
    Calculate EIRP (Effective Isotropic Radiated Power) in dBm, dBW and watts from transmitter power, antenna gain and cable loss.
  • Number of Subnets Calculator
    Calculate the number of subnets created when you subnet an IPv4 network. Enter the original and new prefix lengths to find subnets, borrowed bits, and hosts.
  • Hosts per Subnet Calculator
    Calculate the number of usable host IP addresses per subnet from a CIDR prefix length (/8 to /32). Fast IPv4 subnetting host count tool.
  • IP Address to Decimal Converter
    Convert an IPv4 address (a.b.c.d) to its 32-bit decimal integer value. Enter four octets and get the exact long integer representation instantly.

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