Classic Unit Converter
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Classic Unit Converter

Precise conversions for every situation.

Select a category to start converting

Choose one of the conversion categories above to access specific unit converters. Each category contains specialized units and conversion formulas.

Popular conversions

  • Length (meters to feet, inches to centimeters)
  • Weight (kilograms to pounds, ounces to grams)
  • Temperature (Celsius to Fahrenheit)
  • Volume (liters to gallons, cups to milliliters)
  • Area (square meters to square feet)

Features

  • Accurate conversion formulas
  • Detailed unit information
  • Copy results with one click
  • Multiple number formats (US, EU, Plain)
  • Mobile-friendly interface

Quick Tips

Click any category tab above to start converting. You can swap units with the swap button, copy results to clipboard, and view detailed information about each unit. Your recent conversions are saved automatically for quick access later.

Filter Conversion Categories

Area

Convert between square meters, acres, etc.

Currency

Convert between USD, EUR, GBP, etc.

Length

Convert between meters, feet, inches, etc.

Weight

Convert between kilograms, pounds, ounces, etc.

Speed

Convert between mph, km/h, m/s, knots, etc.

Temperature

Convert between Celsius, Fahrenheit, Kelvin, etc.

Time

Convert between seconds, minutes, hours, etc.

Volume

Convert between liters, gallons, cups, etc.

Electricity & Power

Convert between watts, kilowatts, horsepower, etc.

Frequency

Convert between Hz, kHz, MHz, GHz, THz, etc.

Digital Storage

Convert between bytes, KB, MB, GB, TB, etc.

Energy

Convert between joules, calories, BTU, kWh, etc.

Force

Convert between newtons, pounds-force, dynes, etc.

Kitchen Measures

Convert between cups, tablespoons, teaspoons, etc.

Pressure

Convert between pascals, PSI, bar, atmosphere, etc.

Nutrition

Convert between calories and kilojoules

CPU Speed

Convert between MHz, GHz processor frequencies

Data Transfer

Convert between Mbps, Gbps, MB/s network speeds

Density

Convert between kg/m³, g/cm³, lb/ft³

Font Size

Convert between pt, px, em, rem

Illuminance

Convert between lux, foot-candles, phots

Radiation

Convert between Sieverts, Rem, Becquerel

Popular Conversions

    Universal Unit Converter

    The most comprehensive and accurate unit converter available online.

    Quick Links

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    Popular Conversions

    • Meters to Feet
    • Celsius to Fahrenheit
    • Kilograms to Pounds
    • Kilometers to Miles

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