Conversions: Calculators and Tools
Units of measurement and number bases, from kilometers to binary.
Everyone has gotten lost in a recipe written in cups, a specification in inches, or a file measured in megabytes that seems to have a different size everywhere. Converting units is one of those small tasks that produce big errors.
The tools in this category use exact conversion factors, when they exist, and show the calculation used so you can check it. There is also a number base converter, useful for computer science students and for anyone curious about how machines count.
Unit Converter
Length, mass, area, volume, speed, time, temperature, data, energy and angle.
Open tool →Number Base Converter
Binary, octal, decimal, hexadecimal and any base from 2 to 36, with the work shown.
Open tool →Where to start. For everyday use, the unit converter covers length, mass, area, volume, speed, time, temperature and digital data. The base converter is more specific: it is for studying number systems, programming and electronics.
Explore other categories
Math
Percentages, proportions and equations explained step by step.
Explore →Geometry
Areas, volumes and the Pythagorean theorem with figures and examples.
Explore →Physics
Motion and electricity with the basic formulas well explained.
Explore →Daily Life
Dates, deadlines, age and averages for everyday calculations.
Explore →Utilities
Word counter and secure password generator, right in your browser.
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