Unit Converter Online
Convert between various units of measurement including length, weight, temperature, and volume. Essential for international business and education.
Formula: Select values to see conversion formula
How to Use the Unit Converter
Step 1: Select Conversion Type
Choose the type of measurement you want to convert from the dropdown menu. Options include length, weight, temperature, volume, area, speed, and time.
Step 2: Enter Value
Type the number you want to convert in the "From" field. The converter accepts decimal numbers and automatically updates the result as you type.
Step 3: Select Units
Choose the units you're converting from and to using the dropdown menus. The conversion happens instantly when you change either unit.
Step 4: View Result
The converted value appears automatically in the "To" field. You can also see the conversion formula used for the calculation.
Unit Converter Features
Multiple Categories
Convert between length, weight, temperature, volume, area, speed, and time measurements with comprehensive unit support.
Real-Time Conversion
Results update instantly as you type or change units. No need to click buttons or wait for processing.
Unit Swapping
Quickly swap the "from" and "to" units with a single click using the swap button between the input fields.
Formula Display
See the mathematical formula used for each conversion, helping you understand the relationship between different units.
International Standards
Supports both metric and imperial systems with accurate conversion factors based on international standards.
Mobile Optimized
Works perfectly on all devices with responsive design optimized for smartphones, tablets, and desktop computers.
Supported Unit Categories
Length / Distance
Metric: Millimeter, Centimeter, Meter, Kilometer
Imperial: Inch, Foot, Yard, Mile
Other: Nautical Mile, Light Year, Astronomical Unit
Weight / Mass
Metric: Milligram, Gram, Kilogram, Metric Ton
Imperial: Ounce, Pound, Stone, US Ton
Other: Carat, Grain, Troy Ounce
Temperature
Common: Celsius (°C), Fahrenheit (°F), Kelvin (K)
Scientific: Rankine (°R), Réaumur (°Ré)
Volume
Metric: Milliliter, Liter, Cubic Meter
Imperial: Fluid Ounce, Cup, Pint, Quart, Gallon
Other: Cubic Inch, Cubic Foot, Barrel
Area
Metric: Square Millimeter, Square Meter, Hectare, Square Kilometer
Imperial: Square Inch, Square Foot, Square Yard, Acre, Square Mile
Speed
Common: Meters per Second, Kilometers per Hour, Miles per Hour
Other: Feet per Second, Knots, Mach, Speed of Light
Time
Common: Second, Minute, Hour, Day, Week, Month, Year
Other: Millisecond, Microsecond, Decade, Century
Common Conversion Examples
Length Conversions
- 1 meter = 3.28084 feet
- 1 kilometer = 0.621371 miles
- 1 inch = 2.54 centimeters
- 1 yard = 0.9144 meters
Weight Conversions
- 1 kilogram = 2.20462 pounds
- 1 pound = 16 ounces
- 1 gram = 0.035274 ounces
- 1 metric ton = 2204.62 pounds
Temperature Conversions
- 0°C = 32°F = 273.15K
- 100°C = 212°F = 373.15K
- °F = (°C × 9/5) + 32
- °C = (°F - 32) × 5/9
Volume Conversions
- 1 liter = 0.264172 US gallons
- 1 US gallon = 3.78541 liters
- 1 cup = 236.588 milliliters
- 1 cubic meter = 1000 liters
Professional Use Cases
Construction & Engineering
Convert between metric and imperial measurements for building plans, material calculations, and international project specifications.
Cooking & Baking
Convert recipe measurements between different unit systems, adjust serving sizes, and work with international recipes.
International Trade
Convert weights, volumes, and dimensions for shipping calculations, customs documentation, and product specifications.
Education & Science
Support learning and research with accurate unit conversions for physics, chemistry, and engineering calculations.
Travel & Navigation
Convert distances, speeds, and fuel consumption for trip planning and navigation across different countries.
Health & Fitness
Convert body measurements, exercise distances, and nutritional information between different measurement systems.
Conversion Accuracy & Standards
International Standards
All conversion factors are based on internationally recognized standards from organizations like NIST, ISO, and BIPM.
High Precision
Calculations use high-precision arithmetic to ensure accurate results for both everyday and scientific applications.
Regular Updates
Conversion factors are regularly reviewed and updated to reflect any changes in international standards.
Reliable Results
Extensive testing ensures consistent and reliable conversion results across all supported unit categories.
Frequently Asked Questions
How accurate are the conversions?
All conversions use internationally recognized conversion factors with high precision arithmetic. Results are accurate for both everyday use and scientific applications.
Can I convert between any units in the same category?
Yes, you can convert between any units within the same measurement category. For example, any length unit can be converted to any other length unit.
Why do some conversions show many decimal places?
High precision is maintained to ensure accuracy. You can round the results to the appropriate number of decimal places for your specific use case.
Are the conversion factors updated regularly?
Yes, we regularly review and update conversion factors to ensure they reflect the latest international standards and definitions.