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Home โ€บ Unit Converter

Online Unit Converter - Free & Instant

Instant, accurate unit conversions across 17 categories and 280+ units. No registration required.

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Length Converter
Convert meters, feet, inches, kilometers, miles, centimeters, yards and more instantaneously.
mkmcmmmยตm
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Weight & Mass Converter
Convert kilograms, grams, pounds, ounces, milligrams, metric tons, carats, and stones.
kggmgtlb
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Temperature Converter
Convert between Celsius (ยฐC), Fahrenheit (ยฐF), Kelvin (K), and Rankine (ยฐR).
ยฐCยฐFKยฐR
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Area Converter
Convert square meters, square feet, acres, hectares, square kilometers, square miles and square inches.
mยฒkmยฒftยฒinยฒha
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Volume & Capacity Converter
Convert liters, milliliters, gallons, quarts, pints, cups, fluid ounces, and cubic meters.
LmLmยณgalqt
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Time Converter
Convert seconds, minutes, hours, days, weeks, months, years, decades, and milliseconds.
smsminhd
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Digital Data & Storage Converter
Convert Bytes, Kilobytes (KB), Megabytes (MB), Gigabytes (GB), Terabytes (TB), Petabytes (PB) & Bits.
BbKBMBGB
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Speed & Velocity Converter
Convert m/s, km/h, mph (miles per hour), knots, feet per second, and Mach.
m/skm/hmphknft/s
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Pressure Converter
Convert Pascal (Pa), Bar, PSI, Atmosphere (atm), Kilopascal (kPa), and Torr/mmHg.
PakPabarpsiatm
โšก
Energy & Work Converter
Convert Joules, Kilojoules, Calories, Kilocalories (kcal), Watt-hours, kWh, and BTU.
JkJcalkcalWh
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Power Converter
Convert Watts (W), Kilowatts (kW), Megawatts (MW), and Horsepower (hp).
WkWMWhp
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Angle Converter
Convert Degrees (ยฐ), Radians (rad), Gradians (grad), Arcminutes, and Arcseconds.
ยฐradgrad'"
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Frequency Converter
Convert Hertz (Hz), Kilohertz (kHz), Megahertz (MHz), and Gigahertz (GHz).
HzkHzMHzGHz
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Fuel Consumption Converter
Convert MPG (Miles per Gallon), L/100km (Liters per 100km), and km/L (Kilometers per Liter).
km/LL/100kmMPG (US)
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Cooking Converter
Convert cups, tablespoons, teaspoons, fluid ounces, pints, quarts, liters, gallons and milliliters instantly.
cupmltbsptspfl oz
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Currency Converter
Convert US Dollars, Euros, Yen, Pounds, Rupiah and 160+ world currencies with live exchange rates.
$โ‚ฌยฅยฃA$
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Crypto Converter
Convert Bitcoin, Ethereum, Solana and top cryptocurrencies with live prices.
$โ‚ฟฮžโ‚ฎBNB

Popular unit conversions

Meter โ†’ KilometerMile โ†’ KilometerInch โ†’ CentimeterFoot / Feet โ†’ MeterCentimeter โ†’ InchKilometer โ†’ MileFoot / Feet โ†’ CentimeterKilogram โ†’ Pound (lbs)Gram โ†’ Ounce (oz)Pound (lbs) โ†’ KilogramOunce (oz) โ†’ GramCelsius โ†’ FahrenheitFahrenheit โ†’ CelsiusAcre โ†’ HectareHectare โ†’ AcreMegabyte (MB) โ†’ Gigabyte (GB)Gigabyte (GB) โ†’ Megabyte (MB)Kilobyte (KB) โ†’ Megabyte (MB)Kilometer / Hour โ†’ Mile / Hour (mph)Mile / Hour (mph) โ†’ Kilometer / HourLiter โ†’ Gallon (US)Gallon (US) โ†’ LiterHour โ†’ MinuteMinute โ†’ SecondCalorie โ†’ JouleCup โ†’ MilliliterTablespoon โ†’ MilliliterTeaspoon โ†’ TablespoonUS Dollar (USD) โ†’ Indonesian Rupiah (IDR)US Dollar (USD) โ†’ Euro (EUR)Euro (EUR) โ†’ US Dollar (USD)US Dollar (USD) โ†’ Japanese Yen (JPY)Bitcoin (BTC) โ†’ US Dollar (USD)Ethereum (ETH) โ†’ US Dollar (USD)

FAQ

What is a unit converter and how does it work?

A unit converter translates a measurement from one unit to another using exact conversion factors โ€” for example, 1 meter equals 3.28084 feet. Enter any value, pick your units, and the result appears instantly.

Is this unit converter free to use?

Yes. Every converter on this page is completely free with no signup, no usage limits, and no watermarks. All 17 categories and 280+ units are fully unlocked.

How accurate are the conversions?

All factors use international standard definitions (for example, 1 inch equals exactly 2.54 cm and 1 pound equals exactly 0.45359237 kg), computed with full precision and rounded for readability.

Can I use the converters on mobile?

Yes. Every converter is mobile-friendly and runs entirely in your browser, so it keeps working even on a slow connection once the page has loaded.

Is the unit converter free?

Yes, 100% free with no limits. All calculators, tables and examples work with no signup and no fees.

How many converters are available?

There are 17 converter categories covering length, weight, temperature, data, area, speed, time, volume, energy, pressure, power, angle, fuel, frequency, cooking, currency and crypto โ€” with hundreds of unit pairs, all free.