Technology Calculators

Technology calculators support software developers, system administrators, network engineers, and digital-content creators with the kind of quick conversions and lookups that come up constantly: subnet math, bandwidth requirements, color conversions, URL encoding, and pixel density calculations. We've focused on the highest-frequency tools for these audiences.

The IP subnet calculator (subnet calculator) handles IPv4 CIDR-to-subnet conversions, including network address, broadcast address, usable host range, and subnet mask. This is the bread-and-butter calculation for any networking work, from configuring a home router to designing enterprise WAN topology.

The bandwidth calculator converts between Mbps, MB/s, GB/hr, and similar units. The 8-bits-per-byte conversion (and the resulting factor-of-8 between "Mbps" and "MB/s") trips up surprisingly many people. We also handle calculations for file transfer time and video streaming bitrate requirements (e.g., 4K streaming needs ~25 Mbps).

The data storage calculator handles binary (KiB, MiB, GiB, TiB) vs decimal (KB, MB, GB, TB) conversions. The disk-manufacturer convention (decimal, base-10) and the operating-system convention (binary, base-2) differ by about 7% by the gigabyte level and account for the perpetual "why is my 1TB drive showing as 931GB" question.

The password generator produces cryptographically random passwords using the platform's CSPRNG. The PPI calculator (pixels per inch) supports display and print design work — converting between screen resolution, physical screen size, and effective pixel density. The aspect ratio calculator handles the standard image and video aspect ratios (4:3, 16:9, 21:9, etc.).

For web development, we have URL encoding/decoding, hex-to-decimal conversion, binary-to-decimal conversion, and color converters (RGB, HSL, hex). The AI API cost calculator estimates per-call cost for OpenAI, Anthropic, Google, and other model providers based on current per-token pricing.

These calculators use standard reference data (NIST for cryptographic primitives, IEEE for networking standards, official API pricing for AI calculators which we update as providers change rates).