Unit Converter
Convert length, weight, volume, digital storage, shoe sizes and temperature between metric and imperial units instantly.
How to use the unit converter
Choose a category (length, weight, volume, digital storage, shoe size, or temperature), enter a value, and pick your starting and target units. The converted result updates instantly as you type — no need to press a button. Use the swap button to quickly flip the "from" and "to" units.
Frequently asked questions
How accurate are the conversions?
Length, weight, volume, digital storage, and temperature conversions use standard internationally recognized conversion factors (for example, 1 inch = 2.54 cm exactly) and display results rounded to a sensible number of decimal places.
What units are supported?
Length: millimeters, centimeters, meters, kilometers, inches, feet, yards, and miles. Weight: milligrams, grams, kilograms, metric tons, ounces, pounds, and stone. Volume: milliliters, liters, teaspoons, tablespoons, fluid ounces, cups, pints, quarts, and gallons (US). Digital storage: bits, bytes, kilobytes, megabytes, gigabytes, and terabytes. Shoe size: US, UK, EU, and centimeters (foot length), for both men's and women's sizing. Temperature: Celsius, Fahrenheit, and Kelvin.
Why is temperature conversion different from length or weight?
Length and weight units are simple multiples of each other, so converting is just multiplication. Temperature scales (Celsius, Fahrenheit, Kelvin) have different zero points, so converting between them requires addition and subtraction as well as multiplication.
How are digital storage units calculated — 1000 or 1024 bytes per kilobyte?
This converter uses the decimal standard (1 kilobyte = 1,000 bytes, 1 megabyte = 1,000,000 bytes, and so on), which matches how storage manufacturers and most everyday file-size displays measure capacity.
Are shoe size conversions exact?
Shoe sizing isn't perfectly standardized — it can vary slightly by brand and country. This converter uses commonly published US/UK/EU/CM size-chart equivalences as a close approximation, separated by men's and women's sizing, but always check a specific brand's own size chart before buying if you can.