Free tools for computer science, math, and dev work
Fast, clear, no clutter — built to explain, not just spit out a number.
Popular tools
Number base converter
1010 → 10
Two’s complement calculator
Shows the steps, not just the result.
IEEE 754 converter
Bit-level breakdown of sign, exponent, and mantissa.
DMS converter
Degrees, minutes, seconds, and back again.
JSON formatter
Format and validate in one step.
Base64 encoder/decoder
Encode or decode text, safely handles unicode.