Unit Converter

Convert between units of measurement instantly with precision. From length and weight to temperature and speed, get accurate conversions for any unit system. Perfect for engineering, cooking, travel, and everyday use.

Length100 cm = 3.28 feet
Temperature25°C = 77°F
Weight1 kg = 2.2 lbs

The Bottom Line

This unit converter provides instant, precise conversions across six essential measurement categories: length (meter, kilometer, mile, yard, foot, inch, centimeter, millimeter), weight/mass (kilogram, gram, pound, ounce, ton, milligram), temperature (Celsius, Fahrenheit, Kelvin), volume (liter, gallon, quart, pint, cup, fluid ounce, milliliter), area (square meter, acre, hectare, square foot, square mile, square kilometer), and speed (meter per second, kilometer per hour, mile per hour, knot, foot per second). Select measurement category via visual category buttons, enter value to convert, choose from and to units from dropdown lists, and view results with up to 6 decimal places for precision. Bidirectional swap button reverses conversion direction instantly without re-entering values. Real-time calculation updates automatically as you modify input values or change units. Perfect for cooking recipe conversions, international travel planning, engineering calculations, construction measurements, fitness tracking, scientific computations, vehicle specifications, real estate comparisons, or any scenario requiring accurate unit transformations between metric, imperial, and specialized measurement systems. Category-based organization groups related units together—length units stay separate from weight units, temperature conversions isolated from volume calculations. Supports common conversions like kilometers to miles for road trips, Celsius to Fahrenheit for weather, liters to gallons for fuel consumption, kilograms to pounds for luggage weight, square meters to square feet for floor plans, and kilometers per hour to miles per hour for speedometers. All conversions use precise mathematical formulas and happen locally in your browser with complete privacy—no measurement values ever get transmitted to servers, ensuring confidential engineering specifications, proprietary calculations, or personal data stays on your device.

Length Converter

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How to Use

Select Category

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

Enter Value

Type the value you want to convert in the input field

Choose Units

Select the units you're converting from and to

Swap Direction

Click the swap button to reverse the conversion direction

Supported Conversions

Length

Meter, Kilometer, Mile, Yard, Foot, Inch, and more

Weight

Kilogram, Gram, Pound, Ounce, Ton, and more

Temperature

Celsius, Fahrenheit, Kelvin

Volume

Liter, Gallon, Quart, Cup, Fluid Ounce, and more

Area

Square Meter, Acre, Hectare, Square Mile, and more

Speed

Meter/Second, Kilometer/Hour, Mile/Hour, Knot

Problems This Unit Converter Solves

  • Eliminates manual conversion formula calculations - Stop looking up conversion factors or multiplying/dividing incorrectly when converting miles to kilometers or pounds to kilograms. Get instant, accurate conversions without memorizing formulas.
  • Prevents international recipe cooking failures - Forget ruining dishes because you estimated cup-to-milliliter conversions or confused Fahrenheit with Celsius oven temperatures. Convert recipe measurements precisely for consistent cooking results.
  • Removes travel distance confusion - Avoid misunderstanding highway signs showing kilometers when you think in miles, or vice versa. Convert distances instantly to understand journey lengths in familiar units.
  • Saves time on engineering unit transformations - Stop manually converting measurements between metric and imperial systems for technical specifications. Toggle between unit systems effortlessly for construction plans, manufacturing specs, or scientific calculations.
  • Eliminates luggage weight guesswork - Forget weighing bags in kilograms and wondering if you're under the 50-pound airline limit. Convert weight limits to your preferred unit system before packing.
  • Prevents real estate size misunderstandings - Avoid confusion about whether 100 square meters is big or small for an apartment. Convert square footage to square meters (or vice versa) to understand property dimensions in familiar terms.
  • Streamlines vehicle specification comparisons - Stop struggling to compare fuel efficiency in MPG versus L/100km or top speeds in km/h versus mph. Standardize vehicle specs to your preferred measurement system.
  • Removes temperature interpretation errors - Forget mentally estimating whether 20°C means you need a jacket or wondering what 75°F feels like. Convert temperatures between Celsius and Fahrenheit for accurate weather understanding.
  • Eliminates fitness tracking unit inconsistencies - Avoid confusion when your fitness app shows kilometers but your running route uses miles, or when weight loss goals use pounds but your scale shows kilograms. Unify measurements for clear progress tracking.
  • Ensures complete privacy for proprietary conversions - Stop using unit converters that might log engineering specifications, construction measurements, or scientific data. All conversions happen locally in your browser without transmitting confidential measurements to servers.