Unit Converter

Convert between units of length, weight, temperature, and more

Foot (ft)

3.2808399

1 Metre (m) in all units

Kilometre (km)

Centimetre (cm)

Millimetre (mm)

Mile (mi)

Yard (yd)

Foot (ft)

Inch (in)

Nautical Mile

About the Unit Converter

This unit converter handles length, weight, temperature, volume, area and speed, converting between metric and imperial units as you type, in both directions. Conversion factors are stored at full precision rather than rounded, so converting a value and converting it back returns the number you started with.

A unit converter is needed most often between the metric and imperial systems: a recipe in cups, a height in feet and inches, a package weight in pounds, an oven temperature in Fahrenheit, or a speed limit in miles per hour.

Every category converts in both directions and updates as you type, so there is no submit step and no need to know which way round the factor goes. Temperature is handled with its proper formulas rather than a multiplier, since Celsius and Fahrenheit have different zero points — the common source of wrong answers.

Factors are stored at full precision, so converting inches to centimetres and back returns the number you started with instead of drifting. Everything runs in your browser.

How to use the Unit Converter

  1. Pick a category. Choose length, weight, temperature, volume, area or speed.
  2. Choose your units. Select the unit you have and the unit you want.
  3. Enter the value. Type the amount. The converted figure appears immediately.
  4. Switch direction. Swap the units to convert the other way.

Unit Converter features

  • Multiple measurement categories
  • Metric to imperial conversions
  • Scientific unit support
  • High precision calculations
  • Real-time conversion results
  • Common unit presets
  • Custom unit entry
  • Conversion history
  • Professional accuracy
  • Mobile-responsive design

Frequently asked questions

What measurement categories does this unit converter support?

Comprehensive support for Length (meters, feet, inches, miles), Weight (kilograms, pounds, ounces), Temperature (Celsius, Fahrenheit, Kelvin), Volume (liters, gallons, cups), Area (square meters, acres, square feet), Speed (km/h, mph, m/s), and many other measurement categories.

How accurate are the unit conversions?

Uses official conversion standards from International System of Units (SI) and National Institute of Standards and Technology (NIST). Conversions maintain high precision for scientific and engineering applications, with appropriate decimal places for each measurement type.

Can this converter handle complex scientific units?

Yes! Supports scientific units including Newtons for force, Joules for energy, Pascals for pressure, Watts for power, and other SI units. Essential for physics, chemistry, engineering calculations, and scientific research applications.

What are common uses for unit conversion?

Essential for international trade, scientific research, engineering projects, cooking with international recipes, travel planning, construction, manufacturing, education, and any scenario requiring measurement standardization across different systems.

How does this handle metric vs imperial systems?

Seamlessly converts between metric (SI) and imperial (US customary) systems. Maintains precision in both directions, understanding that 1 inch = 2.54 cm exactly, while other conversions may involve standardization factors for practical use.

Are there specialized conversions for specific industries?

Yes! Includes industry-specific conversions like cooking units (cups, tablespoons), construction units (board feet, square yards), automotive units (horsepower, kilowatts), and medical units (milligrams, micrograms) for professional applications.