Free Unit Converter - Convert Length, Weight, Temperature & More

Convert between metric and imperial units instantly. Length, weight, temperature, volume, area, time, and speed conversions made easy.

How to Use the Unit Converter

1

Select Category

Choose the type of measurement you want to convert (length, weight, temperature, etc.).

2

Choose Units

Select the units you're converting from and to using the dropdown menus.

3

Enter Value

Type the value you want to convert in the input field and see the result instantly.

What is a Unit Converter?

Unit Converter is your comprehensive solution for converting between different units of measurement. Whether you're working on engineering projects, cooking recipes, or scientific calculations, our converter provides accurate and instant conversions across multiple categories.

Our free online unit converter supports length, weight, temperature, volume, area, time, and speed conversions with both metric and imperial units. Each conversion uses official conversion factors for maximum accuracy, and results are calculated to 6 decimal places.

The tool features a clean, intuitive interface with category selection, unit dropdowns, and instant results. Save frequently used conversions to your history for quick access, and switch between different measurement types seamlessly.

How Does the Unit Converter Work?

The unit converter operates using standardized conversion factors and formulas. For most units, conversions are performed by first converting to a base unit (like meters for length or kilograms for weight) and then converting to the target unit.

Temperature conversions use the official formulas: Celsius to Fahrenheit uses (°C × 9/5) + 32, while Kelvin conversions use °C + 273.15. All other conversions use internationally recognized conversion factors for precision and consistency.

Conversion Process

1. Select measurement category (length, weight, etc.)
2. Choose source and target units
3. Enter value to convert
4. Result appears instantly using base unit conversion

Supported Units and Categories

Our unit converter supports comprehensive measurement categories with both metric and imperial units. Each category includes commonly used units with accurate conversion factors.

Available Conversion Categories

Length & Distance

  • • Meters, Kilometers, Centimeters
  • • Inches, Feet, Yards, Miles
  • • Nautical Miles

Weight & Mass

  • • Kilograms, Grams, Tonnes
  • • Pounds, Ounces, Stones

Temperature

  • • Celsius (°C)
  • • Fahrenheit (°F)
  • • Kelvin (K)

Volume & Capacity

  • • Liters, Milliliters
  • • Gallons, Quarts, Pints
  • • Cups, Fluid Ounces

Area & Surface

  • • Square Meters, Square Kilometers
  • • Square Feet, Acres, Hectares

Time & Duration

  • • Seconds, Minutes, Hours
  • • Days, Weeks, Months, Years

Speed & Velocity

  • • Meters/Second, Kilometers/Hour
  • • Miles/Hour, Knots, Feet/Second

When to Use a Unit Converter

Engineering & Construction

Convert between metric and imperial measurements for blueprints and specifications.

Science & Research

Convert temperature scales and other units for laboratory work and calculations.

Cooking & Baking

Convert volume measurements between cups, liters, gallons, and other cooking units.

Travel & Navigation

Convert speed units, distances, and other measurements for international travel.

Frequently Asked Questions

Our converter supports length, weight, temperature, volume, area, time, and speed conversions. Each category includes both metric and imperial units.

All conversions use official conversion factors and are accurate to 6 decimal places. Temperature conversions use the standard formulas for Celsius, Fahrenheit, and Kelvin.

Yes, you can convert between any two units within the same category. For example, you can convert from meters to feet, or from kilograms to pounds.

The converter accepts standard number inputs. For very large or small numbers, consider using scientific notation.

Temperature conversions use the standard formulas: Celsius to Fahrenheit is (°C × 9/5) + 32, and Kelvin is °C + 273.15.