Unit Converter

Free Online Unit Converter for Every Measurement

cm → inches kg → lbs °C → °F miles → km liters → gallons MB → GB

Unit Categories

Length

19 units

Convert between meters, feet, inches, cm, mm, miles, yards, and more length units.

cm → inches km → miles meters → feet
View Length converter

Weight & Mass

10 units

Convert between kilograms, pounds, ounces, grams, stones, and tons.

kg → lbs lbs → kg grams → ounces
View Weight & Mass converter

Temperature

3 units

Convert between Celsius, Fahrenheit, and Kelvin temperature scales.

°C → °F °F → °C °C → K
View Temperature converter

Volume

12 units

Convert between liters, gallons, milliliters, cups, quarts, and cubic units.

liters → gallons gallons → liters ml → fluid-ounces
View Volume converter

Area

34 units

Convert between square meters, square feet, acres, hectares, and regional land units.

sq-meters → sqft sqft → sq-meters acres → sqft
View Area converter

Speed

5 units

Convert speed units including mph, km/h, knots, and mach.

kph → mph mph → kph m-s → kph
View Speed converter

Time

10 units

Convert time measurements like seconds, minutes, hours, days, weeks, and years.

hours → minutes minutes → seconds days → hours
View Time converter

Data Storage

7 units

Convert between bits, bytes, kilobytes, megabytes, gigabytes, and terabytes.

mb → gb gb → tb kb → mb
View Data Storage converter

Energy

8 units

Convert energy values between joules, calories, watt-hours, and BTUs.

joules → calories kwh → joules kcal → joules
View Energy converter

Pressure

7 units

Convert pressure units including pascals, bar, PSI, and atmospheres.

psi → bar bar → psi atm → pascals
View Pressure converter

Angle

5 units

Convert angular measurements between degrees, radians, and gradians.

degrees → radians radians → degrees degrees → gradians
View Angle converter

Power

5 units

Convert power metrics like watts, kilowatts, and horsepower.

kw → hp hp → kw watts → kw
View Power converter

Force

5 units

Convert force units such as newtons, dynes, and pound-force.

newtons → lbf lbf → newtons kn → newtons
View Force converter

Frequency

5 units

Convert frequencies between hertz, kilohertz, megahertz, and gigahertz.

Hz → khz mhz → ghz rpm → Hz
View Frequency converter

Torque

4 units

Convert torque metrics between newton-meters and pound-feet.

nm → lb-ft lb-ft → nm
View Torque converter

Density

4 units

Convert density values like g/cm³ and kilograms per cubic meter.

kg-m3 → g-cm3 lb-ft3 → kg-m3
View Density converter

Flow Rate

5 units

Convert flow rate values including liters per minute and GPM.

l-min → gpm m3-s → l-s
View Flow Rate converter

Fuel Consumption

4 units

Convert fuel economy ratings like MPG and L/100km.

mpg (US) → L/100km L/100km → mpg (US) mpg (US) → mpg (UK)
View Fuel Consumption converter

Illumination

3 units

Convert illumination levels between lux, foot-candles, and phots.

lx → fc fc → lx
View Illumination converter

Typography

5 units

Convert typographical measurements between pixels, points, and picas.

pixels → points points → pixels inches → pixels
View Typography converter

Cooking (Volume)

8 units

Convert cooking units between cups, tablespoons, teaspoons, and milliliters.

cups → ml tablespoons → teaspoons fluid-ounces → cups
View Cooking (Volume) converter

Data Transfer Rate

10 units

Convert data rates like bits per second, megabits per second, and bytes per second.

mbps → gbps kbps → mbps MB/s → mbps
View Data Transfer Rate converter

Electric Voltage

5 units

Convert electrical voltage including volts, millivolts, and kilovolts.

volts → millivolts millivolts → volts kilovolts → volts
View Electric Voltage converter

Electric Current

4 units

Convert electric current measurements between amperes, milliamperes, and microamperes.

amps → milliamps milliamps → amps microamps → milliamps
View Electric Current converter

What Is a Unit Converter?

A unit converter is an online tool that transforms a value from one unit of measurement to another within the same physical quantity. Whether you need to convert centimeters to inches, kilograms to pounds, Celsius to Fahrenheit, or miles per hour to kilometers per hour, a unit converter calculator gives you the answer instantly — no manual formula required.

MyUnitConverter is a free online unit converter built for speed, accuracy, and clarity. With support for 77+ unit categories and live bidirectional conversion, you see your result the moment you start typing — no button clicks, no page reloads, no wasted time.

How to Use the Unit Converter

  1. Choose a category — pick from the grid on the homepage: length, weight, temperature, volume, area, time, speed, pressure, energy, torque, electricity, and 65+ more.
  2. Select your units — choose the unit you're converting from and the unit you're converting to using the dropdown menus.
  3. Enter your value — type any number and the converted result appears instantly in real time.
  4. Swap units — click the swap button or press S on your keyboard to instantly reverse the conversion direction.
  5. Copy or share — press C to copy the result, or share the page URL which contains your exact conversion for bookmarking or sending.

Unit Converter Categories

MyUnitConverter covers every major measurement system used globally today:

Common Converters: Length Converter, Weight Unit Converter, Temperature Converter, Volume Converter, Area Converter, Time Unit Converter, Speed Converter, Pressure Unit Converter, Energy Converter, Power Unit Converter

Engineering Converters: Torque Unit Converter, Density Unit Converter, Force Converter, Acceleration Converter, Moment of Inertia Converter

Electricity Converters: Electricity Unit Converter, Charge Converter, Current Converter, Voltage Converter, Electric Resistance Converter, Capacitance Converter, Inductance Converter

Other Converters: Metric Unit Converter, Data Storage Converter, Data Transfer Converter, Numbers Converter, Sound Converter, Typography Converter, Currency Converter, Unit Converter for Money

Every category page includes the exact mathematical formula used, a reference conversion table, and a FAQ section so you understand the conversion — not just the number.

Why MyUnitConverter Is Better

Older tools like unitconverters.net were built in 2008 and haven't kept up with how people use the web today. MyUnitConverter was built from scratch with modern standards:

  • Instant results — live conversion as you type, no submit button needed
  • Shareable URLs — every conversion has its own link: /cm-to-inches, /kg-to-lbs, /celsius-to-fahrenheit — bookmark or share any conversion
  • Keyboard shortcuts — Tab between fields, S to swap, C to copy result
  • Formula display — every converter shows the math behind the answer
  • Dark and light mode — comfortable to use any time of day
  • Mobile-first design — works perfectly on phones, tablets, and desktops
  • No account required — open the page and start converting immediately
  • Recent history — your last 10 conversions are saved locally for quick access

Frequently Asked Questions

What is a unit converter?
A unit converter is an online tool that transforms a measurement from one unit to another within the same physical quantity — for example, converting kilometers to miles, kilograms to pounds, or Celsius to Fahrenheit using exact mathematical conversion factors.
How do I use an online unit converter?
To use MyUnitConverter: (1) Select a unit category such as length, weight, or temperature. (2) Choose your from and to units using the dropdowns. (3) Type your value — the result updates live as you type. (4) Press S to swap units or C to copy the result. No signup or installation required.
What is the most accurate online unit converter?
MyUnitConverter uses exact SI (International System of Units) conversion factors calculated to 15 significant figures, making it one of the most accurate free online unit converter calculators available.
Does Google have a unit converter?
Google includes a basic unit converter in search results for common conversions like length and temperature. However, it does not support engineering units, electricity converters, torque, density, or the 77+ specialist categories available on MyUnitConverter.
What is a metric unit converter?
A metric unit converter helps you convert between units in the International System of Units (SI), such as meters, kilograms, liters, and Celsius. MyUnitConverter supports full metric-to-imperial and metric-to-metric conversions across all major categories.
How do I use a unit converter on TI-84 Plus?
On a TI-84 Plus calculator, press the APPS button and select the Unit Converter app if installed, or use the ANGLE menu for angle conversions. For a faster alternative, use MyUnitConverter online — it supports all the same conversions instantly in your browser without any setup.
How do I make a unit converter in Python?
To make a unit converter in Python, define a dictionary of conversion factors for each unit category, then write a function that takes a value, from-unit, and to-unit as arguments and returns value * (factor[from_unit] / factor[to_unit]). For a ready-to-use online alternative, MyUnitConverter handles all categories without any code.
How do I create a unit converter in Excel?
In Excel, use the built-in CONVERT function: =CONVERT(value, from_unit, to_unit). For example, =CONVERT(1, 'kg', 'lbm') converts 1 kilogram to pounds. Excel supports common unit categories including weight, length, temperature, and volume through this function.
What happened to Google unit converter?
Google's built-in unit converter is still available — search 'unit converter' or any specific conversion like '5 kg to lbs' in Google Search to see the calculator widget. However, it covers only basic categories. MyUnitConverter supports 77+ categories including engineering, electricity, and radiology units that Google's tool does not include.
Is there a free unit converter app?
Yes. MyUnitConverter works as a Progressive Web App (PWA) — open myunitconverter.app in your phone browser and tap 'Add to Home Screen' on iOS or Android. You get a free, app-like unit converter with 77+ categories, dark mode, and offline support — no App Store download required.
What is the difference between a unit converter and a calculator?
A calculator performs arithmetic operations on numbers. A unit converter transforms a measurement expressed in one unit into its equivalent in another unit using a fixed conversion factor — for example, multiplying meters by 3.28084 to get feet. MyUnitConverter combines both: you enter a value and get the converted result instantly, with the formula displayed.
How do I use a unit converter for weight?
On MyUnitConverter, go to the Weight and Mass Converter page. Select your input unit (e.g. kilograms) and output unit (e.g. pounds) from the dropdowns. Type your weight value and the converted result appears instantly. Common weight conversions include kg to lbs, grams to ounces, and tonnes to pounds.

Quick Conversion Links

cm to inches | kg to lbs | Celsius to Fahrenheit | mm to inches | meters to feet | km to miles | feet to cm | grams to ounces | inches to cm | liters to gallons | mph to kph | acres to sq ft | lbs to kg | Fahrenheit to Celsius | miles to km | ounces to grams