Converters translate a value from one unit or representation to another, instantly and in both directions. This collection spans everyday measurement conversions (kilograms and pounds, miles and kilometers, feet and meters, Celsius and Fahrenheit) and technical ones (number bases, text to binary, data storage sizes, and time zones). Each shows the formula or method so you can see how the result is reached.

Conversions like these come up constantly when you move between metric and imperial contexts, work with computer data, or coordinate across time zones. Because every conversion runs in your browser, results are immediate and your inputs stay private.

Accurate and two-way

Where a conversion factor is exact (such as one foot being precisely 0.3048 meters), the result is exact too, limited only by the decimal places you choose. Type into either field and the other updates live. Pick a converter above to start.