units7 min
Unit Conversion Guide: Length, Weight, Temperature & More
Master unit conversions with our comprehensive guide covering length, weight, temperature, volume, area, speed, and more.
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Free Online Unit Converter
Convert between units of length, weight, temperature, volume, area, speed, time, digital storage, and energy. Full support for metric and imperial systems.
Our converter includes built-in unit search, recent conversion history, visible conversion formulas, and popular conversions for each category.
Most popular conversions
Kilometers to miles, kilograms to pounds, Celsius to Fahrenheit, liters to gallons, square meters to square feet, GB to MB, calories to joules.
Metric vs Imperial System
The metric system (meters, kilograms, liters) is the international standard used by the vast majority of countries worldwide. The imperial system (feet, pounds, gallons) is primarily used in the United States, Liberia, and Myanmar. Understanding both systems is essential for international trade, travel, cooking with foreign recipes, and scientific communication. Our converter makes it easy to switch between both systems with precision, displaying the formula used in each conversion so you can learn while you convert.
How to Convert Temperature
Temperature conversion is one of the most searched and also one of the most confusing. To convert Celsius to Fahrenheit, multiply by 9/5 and add 32: for example, 25°C equals 77°F. For the reverse conversion, subtract 32 and multiply by 5/9: so 98.6°F is 37°C (normal body temperature). The Kelvin scale, used in science, is obtained by adding 273.15 to degrees Celsius: 0°C equals 273.15 K. Our converter performs these calculations automatically and displays the formula applied.
Digital Storage Units Explained
In the digital age, understanding storage units is essential. A byte (B) is the basic unit and equals 8 bits. A kilobyte (KB) is 1,024 bytes, a megabyte (MB) is 1,024 KB, a gigabyte (GB) is 1,024 MB, and a terabyte (TB) is 1,024 GB. A simple text document takes up a few KB, a high-resolution photo between 3 and 10 MB, an HD movie between 4 and 8 GB, and a modern hard drive typically holds between 512 GB and 2 TB. Our converter lets you quickly switch between bits, bytes, KB, MB, GB, TB, and petabytes (PB).
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