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    Universal Unit Converter,
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    A free, comprehensive tool for length, mass, temperature, volume & more. Convert, calculate, and explore 450+ units across 36 categories.

    Universal Unit ConverterRegional/Traditional Unit Converter
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    // Type natural language conversions
    convert("5 kilometers to miles")
    → 3.10686 miles
    convert("100 Fahrenheit to Celsius")
    → 37.7778 °C

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    36 Categories & 450+ Units

    From everyday measurements to scientific calculations

    Length
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    Data
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    Typography
    Blood Sugar
    Shoe Size
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    Paper Size
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    Centimeter to InchInch to CentimeterMeter to FootFoot to MeterKilometer to MileMile to KilometerYard to MeterMillimeter to InchKilogram to PoundPound to KilogramOunce to GramGram to OunceKilogram to OunceCelsius to FahrenheitFahrenheit to CelsiusCelsius to KelvinKelvin to CelsiusLiter to Gallon (US)Gallon (US) to LiterCup (US) to MilliliterMilliliter to Cup (US)Tablespoon (US) to MilliliterTeaspoon (US) to MilliliterFluid Ounce (US) to Milliliter
    View all 8576+ conversions

    From the Blog

    Read all articles
    2026-01-08 · 8 min read

    The Metric System: A Beginner's Guide

    Learn the fundamentals of the metric system, its base units, prefixes, and why it's the global standard for scientific measurements.

    2026-01-06 · 6 min read

    Imperial vs Metric: Why the World Uses Different Systems

    Explore the historical origins of imperial and metric systems, and understand why some countries still use imperial measurements.

    2026-01-04 · 5 min read

    How to Convert Celsius, Fahrenheit & Kelvin

    Master temperature conversions with clear formulas, examples, and understand when to use each temperature scale.

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