Why Use This Unit Converter?
Convert Metric, Imperial, Temperature, Weight and More
Use this unit converter to change common measurements in seconds. For example, you can convert cm to inches, mm to inches, kg to lbs, lbs to kg, grams to ounces, litres to gallons, and Celsius to Fahrenheit. Also, the tool supports length, weight, temperature, area, volume, speed, time, data size, pressure, and energy. Therefore, it works well for school, recipes, travel, websites, engineering notes, and daily measurement checks.
Many people search for a metric conversion calculator, unit conversion calculator, or simple units calculator when they need fast answers. This page keeps popular conversions in one place. As a result, you do not need to open separate tools for inches to cm, kilometers to miles, pounds to kilos, pressure conversion, or data size conversion. In addition, the copy button, swap option, precision control, and result history make repeated conversions easier.
Metric and Imperial Conversion
Convert metric to imperial units and imperial to metric units. For example, use it for inch to cm, cm to inches, inches to mm, meters to feet, kilometers to miles, and metric to standard conversion.
Weight and Mass Converter
Quickly convert kg to lbs, lbs to kg, grams to ounces, ounces to grams, kilos to pounds, pounds to kilos, carats to grams, and metric tons to kg.
Temperature Converter
Convert Celsius to Fahrenheit, Fahrenheit to Celsius, Celsius to Kelvin, and Kelvin to Celsius. However, temperature uses formulas with offsets, so it is different from simple factor conversions.
Area, Volume and Pressure
Use the converter for square feet, square meters, acres, hectares, liters, gallons, milliliters, cups, PSI, bar, kPa, atm, and other common pressure conversion needs.
How to Convert Units Online
First, choose a category such as length, weight, temperature, volume, speed, pressure, or energy. Next, enter the value you want to convert. Then, select the original unit and the target unit. Finally, read the result or copy it to your clipboard. You can also use Swap to reverse the conversion direction.
Popular Unit Conversions
This unit converter is useful for common searches such as centimeters to inches, inches to centimeters, kg to pounds, pounds to kg, grams to cups, cups to grams, liters to gallons, gallons to litres, km to miles, miles to kilometers, kPa to PSI, PSI to bar, BTU to watts, watt to kilowatt, and energy conversion. Some power-related searches, such as BTU to kW or watts to amps, may need extra electrical values like voltage or efficiency.
Metric Conversion and Measurement Tips
Metric conversion is usually based on powers of ten. Therefore, millimeters, centimeters, meters, kilometers, grams, kilograms, milliliters, and liters are easy to scale. However, imperial units use different factors. For that reason, conversions like inch to mm, feet to meters, ounces to grams, gallons to liters, and pounds to kilograms are easier with a calculator.
Frequently Asked Questions
Is this unit converter free?
Yes. You can convert common units for free without creating an account.
Does it support metric and imperial units?
Yes. It includes common metric, imperial, and technical units across length, weight, temperature, area, volume, speed, time, data, pressure, and energy.
Can I convert Celsius to Fahrenheit?
Yes. Choose Temperature, then select Celsius and Fahrenheit. The tool also supports Fahrenheit to Celsius and Kelvin conversions.
Can I convert kg to lbs?
Yes. Choose Weight / Mass, then select kilogram as the source unit and pound as the target unit.
Why are some electrical conversions different?
Electrical conversions such as watts to amps or volts to watts often need more than one value. For example, watts to amps also needs voltage.