Unit Converter
Convert between length, weight and temperature units instantly — switch category, pick your units, and see the result update as you type.
| Unit | Value |
|---|---|
| mm | 1000 |
| cm | 100 |
| km | 0.001 |
| in | 39.3701 |
| ft | 3.2808 |
| yd | 1.0936 |
| mi | 0.0006 |
Your files are processed locally in your browser. They are not uploaded to our servers.
How to use
- Choose a category: length, weight or temperature.
- Pick the unit you're converting from.
- Enter a value and read every other unit's converted result instantly, in a single table.
What is this tool?
Unit Converter switches values between common metric and imperial units for length (mm to miles), weight (mg to pounds) and temperature (Celsius, Fahrenheit, Kelvin). Everything is calculated instantly in your browser using standard conversion factors.
Common uses
- Converting recipe measurements between metric and imperial
- Checking package or furniture dimensions in a familiar unit
- Converting temperatures for travel, cooking or weather
- Converting weights for shipping, fitness or cooking
Related tools
%Percentage CalculatorCalculatorsBMIBMI CalculatorCalculatorsAGEAge CalculatorCalculatorsLNLoan CalculatorCalculatorsDCDiscount CalculatorCalculatorsDBDDays Between Dates CalculatorCalculatorsTIPTip CalculatorCalculatorsPCTPercentage Change CalculatorCalculatorsTZTime Zone ConverterCalculatorsCUPCooking Measurement ConverterCalculatorsCCCalorie CalculatorCalculatorsDDDue Date CalculatorCalculatorsBABAC CalculatorCalculatorsSCScientific CalculatorCalculatorsRPRunning Pace CalculatorCalculatorsCICompound Interest CalculatorCalculators
FAQ
Which unit categories are supported?
Length, weight and temperature, each with the most commonly used metric and imperial units.
How accurate are the conversions?
Conversions use standard, widely accepted conversion factors and are accurate to several decimal places.
Can I convert temperatures below zero?
Yes, negative values are supported for Celsius and Fahrenheit conversions.