Are the conversions accurate?

Yes, we use standard conversion factors with high precision. Temperature conversions use official formulas.

Can I search for units?

Yes, each unit selector has a built-in search. You can search by name or abbreviation.

Yes, we save up to 100 recent conversions in your session. You can restore any previous conversion with one click.

Unit Converter

Free online unit converter: instantly convert length, weight, temperature, volume, area, speed, time, data, and energy units. Fast and accurate. Use now.

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From

0.621371

Conversion factor

1 km = 0.621371 mi

Popular

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).

Frequently Asked Questions

What unit categories are available?: We support 9 categories: length, weight, temperature, volume, area, speed, time, digital storage, and energy.
Are the conversions accurate?: Yes, we use standard conversion factors with high precision. Temperature conversions use official formulas.
Can I search for units?: Yes, each unit selector has a built-in search. You can search by name or abbreviation.
Is history saved?: Yes, we save up to 100 recent conversions in your session. You can restore any previous conversion with one click.

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