# Conversions Calculators

- **URL:** https://codeasystem.com/calculators/conversion/
- **Markdown index:** https://codeasystem.com/calculators/conversion/index.md
- **Calculators in this category:** 9

Unit conversion calculators for length, weight, temperature, volume, speed, area, data storage and time.

Focus areas: Length, weight, temperature, data and speed.

## All calculators
- [Length Converter](https://codeasystem.com/calculators/conversion/length-converter.md); Convert lengths and distances between metric and imperial units; millimeters through kilometers, inches, feet, yards and miles.
- [Weight & Mass Converter](https://codeasystem.com/calculators/conversion/weight-mass-converter.md); Convert weights between milligrams, grams, kilograms, tonnes, ounces, pounds, stone and US tons using exact internationally agreed factors.
- [Temperature Converter](https://codeasystem.com/calculators/conversion/temperature-converter.md); Convert temperatures exactly between Celsius, Fahrenheit and Kelvin using the official formulas, with absolute-zero validation built in.
- [Volume Converter](https://codeasystem.com/calculators/conversion/volume-converter.md); Convert volumes among milliliters, liters, cubic meters and US kitchen measures; teaspoons, tablespoons, cups, pints, quarts and gallons.
- [Speed Converter](https://codeasystem.com/calculators/conversion/speed-converter.md); Convert speeds between m/s, km/h, mph, knots and ft/s with exact factors for driving, aviation, marine and running contexts.
- [Area Unit Converter](https://codeasystem.com/calculators/conversion/area-unit-converter.md); Convert areas between square meters, kilometers, feet, yards, acres, hectares and square miles for land, rooms and building plots.
- [Data Storage Converter](https://codeasystem.com/calculators/conversion/data-storage-converter.md); Convert bits, bytes, KB, MB, GB, TB and their binary KiB–TiB counterparts, choosing between decimal (1000) and binary (1024) standards.
- [Time Unit Converter](https://codeasystem.com/calculators/conversion/time-unit-converter.md); Convert durations among milliseconds, seconds, minutes, hours, days, weeks, months and years with calendar-average definitions.
- [Fuel Economy Converter](https://codeasystem.com/calculators/conversion/fuel-economy-converter.md); Convert fuel consumption between US mpg, UK mpg and liters per 100 km with exact triangular formulas; the mpg ↔ L/100km bridge.

Each link above points to the full Markdown reference for that calculator (inputs, formula, worked example, FAQs). The interactive HTML version lives at the same path without the `.md` suffix.

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Last updated: 2026-08-23 · [Section overview](https://codeasystem.com/calculators/index.md)