Math & Calculators
Number base converters, percentage calculators, unit converters, and other math utilities for developers and engineers.
6 tools
All Math & Calculators
Number Base Converter
Convert integers between binary, octal, decimal, hexadecimal, and any custom base (2-36).
Percentage Calculator
Calculate percentages, percentage change, and reverse percentages instantly with clear formulas.
Temperature Converter
Convert temperatures between Celsius, Fahrenheit, Kelvin, and Rankine instantly.
Number to Words
Convert numbers to English words: cardinal, ordinal, and currency format.
Aspect Ratio Calculator
Calculate aspect ratios, find missing dimensions, and scale resolutions while preserving ratio.
Number Formatter
Format numbers with locale-aware separators, currency, percent, scientific, and compact notation.