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Universal Unit Converter

Convert between thousands of units across 20 categories instantly and accurately.

About Universal Unit Converter

Our Universal Unit Converter is a comprehensive online tool that enables you to convert measurements across 20+ categories including length, weight, temperature, area, volume, speed, time, energy, pressure, power, and many more. Whether you are working on engineering projects, scientific calculations, cooking recipes, or everyday conversions, this tool provides accurate results instantly.

Simply select the category, choose your source and target units, enter the value, and get immediate results with detailed conversion formulas. All conversions are calculated with high precision for reliable results.

Convert From

How to Use

1

Select a Category

Choose from 20+ categories such as Length, Weight, Temperature, Area, Volume, Speed, Time, Energy, and more.

2

Enter the Value

Type the numerical value you want to convert. You can enter whole numbers, decimals, or negative values where applicable.

3

Choose Units

Select the source unit from the "From Unit" dropdown and the target unit from the "To Unit" dropdown. Use "Swap Units" to quickly reverse the conversion.

4

View Results

Click "Convert" to see the result with the conversion formula. You will also see all possible conversions within that category.

Common Conversions

Quick links to frequently used conversions. Click any link to see the instant result.

1 Meter to Foot
1 m to ft
1 Meter to Inch
1 m to in
100 Kilometer to Mile
100 km to mi
1 Mile to Kilometer
1 mi to km
1 Inch to Centimeter
1 in to cm
1 Foot to Centimeter
1 ft to cm
1 Yard to Meter
1 yd to m
1 Nautical Mile to Kilometer
1 nmi to km
100 Centimeter to Meter
100 cm to m
1000 Millimeter to Meter
1000 mm to m
1 Kilogram to Pound
1 kg to lb
1 Pound to Kilogram
1 lb to kg
1 Ounce to Gram
1 oz to g
1 Metric Ton to Kilogram
1 t to kg
1000 Gram to Kilogram
1000 g to kg
1 Carat to Gram
1 ct to g
100 Milligram to Gram
100 mg to g
100 Celsius to Fahrenheit
100 °C to °F
32 Fahrenheit to Celsius
32 °F to °C
0 Celsius to Kelvin
0 °C to K
212 Fahrenheit to Celsius
212 °F to °C
37 Celsius to Fahrenheit
37 °C to °F
0 Kelvin to Celsius
0 K to °C
1 Acre to Square Meter
1 ac to m²
1 Square Kilometer to Square Mile
1 km² to mi²
1 Hectare to Acre
1 ha to ac
1 Square Meter to Square Foot
1 m² to ft²
1 Square Mile to Square Kilometer
1 mi² to km²
10000 Square Centimeter to Square Meter
10000 cm² to m²
1 Square Yard to Square Meter
1 yd² to m²
1 Liter to Gallon (US)
1 L to gal
1 Gallon (US) to Liter
1 gal to L
1 Cubic Meter to Liter
1 m³ to L
1 Cup (US) to Milliliter
1 cup to mL
1 Fluid Ounce (US) to Milliliter
1 fl oz to mL
1 Tablespoon to Milliliter
1 tbsp to mL
1 Teaspoon to Milliliter
1 tsp to mL
1 Quart (US) to Liter
1 qt to L
60 Mile/Hour to Kilometer/Hour
60 mph to km/h
100 Kilometer/Hour to Mile/Hour
100 km/h to mph
1 Knot to Kilometer/Hour
1 kn to km/h
1 Mach to Kilometer/Hour
1 Ma to km/h
100 Kilometer/Hour to Meter/Second
100 km/h to m/s
1 Mile/Hour to Meter/Second
1 mph to m/s
1 Year to Day
1 yr to d
1 Day to Hour
1 d to h
1 Hour to Minute
1 h to min
1 Week to Day
1 wk to d
1 Month to Day
1 mo to d
1 Year to Month
1 yr to mo
1 Minute to Second
1 min to s
1000 Millisecond to Second
1000 ms to s
90 Degree to Radian
90 ° to rad
180 Degree to Radian
180 ° to rad
360 Degree to Radian
360 ° to rad
1 Radian to Degree
1 rad to °
45 Degree to Gradian
45 ° to grad
1 Revolution to Degree
1 rev to °
1 Degree to Minute
1 ° to '
1 Gigabyte to Megabyte
1 GB to MB
1 Terabyte to Gigabyte
1 TB to GB
1 Kilobyte to Byte
1 KB to B
1 Petabyte to Terabyte
1 PB to TB
1 Megabyte to Kilobyte
1 MB to KB
1 Byte to Bit
1 B to bit
1 Terabyte to Megabyte
1 TB to MB
1000 Calorie to Joule
1000 cal to J
1 Kilowatt-hour to Joule
1 kWh to J
1 British Thermal Unit to Joule
1 BTU to J
1 Kilocalorie to Calorie
1 kcal to cal
1 Watt-hour to Joule
1 Wh to J
1000 Joule to Kilojoule
1000 J to kJ
1 Atmosphere to Pascal
1 atm to Pa
1 Bar to Pascal
1 bar to Pa
1 PSI to Pascal
1 psi to Pa
1 Atmosphere to Bar
1 atm to bar
1 Torr to Pascal
1 Torr to Pa
1000 Millibar to Bar
1000 mbar to bar
100 Kilopascal to Pascal
100 kPa to Pa
1 Horsepower to Watt
1 hp to W
1 Kilowatt to Watt
1 kW to W
1 Megawatt to Kilowatt
1 MW to kW
1000 Milliwatt to Watt
1000 mW to W
1 BTU/Hour to Watt
1 BTU/h to W
1 Megahertz to Hertz
1 MHz to Hz
1 Gigahertz to Megahertz
1 GHz to MHz
1 Kilohertz to Hertz
1 kHz to Hz
1 Gigahertz to Hertz
1 GHz to Hz
1000 Kilohertz to Megahertz
1000 kHz to MHz
10 Km/Liter to Miles/Gallon (US)
10 km/L to mpg
30 Miles/Gallon (US) to Km/Liter
30 mpg to km/L
8 Liters/100km to Km/Liter
8 L/100km to km/L
1 Miles/Gallon (US) to Miles/Gallon (UK)
1 mpg to mpg (imp)
1 Megabit/Second to Megabyte/Second
1 Mbps to MB/s
1 Gigabit/Second to Megabit/Second
1 Gbps to Mbps
100 Megabit/Second to Kilobit/Second
100 Mbps to Kbps
1 Byte/Second to Bit/Second
1 B/s to bps
1 Kilobyte/Second to Byte/Second
1 KB/s to B/s
1 Ampere to Milliampere
1 A to mA
1 Milliampere to Microampere
1 mA to μA
1 Kiloampere to Ampere
1 kA to A
1 Ampere to Microampere
1 A to μA
1 Volt to Millivolt
1 V to mV
1 Kilovolt to Volt
1 kV to V
1 Volt to Microvolt
1 V to μV
1 Millivolt to Microvolt
1 mV to μV
1 Kiloohm to Ohm
1 kΩ to Ω
1 Megaohm to Kiloohm
1 MΩ to kΩ
1 Ohm to Milliohm
1 Ω to mΩ
1 Megaohm to Ohm
1 MΩ to Ω
1 Newton to Pound-force
1 N to lbf
1 Pound-force to Newton
1 lbf to N
1 Kilonewton to Newton
1 kN to N
1 Kilogram-force to Newton
1 kgf to N
1000 Dyne to Newton
1000 dyn to N
1 Foot-candle to Lux
1 fc to lx
1 Phot to Lux
1 ph to lx
100 Lux to Foot-candle
100 lx to fc

Supported Categories

Length
11 units
Weight
8 units
Temperature
3 units
Area
10 units
Volume
11 units
Speed
6 units
Time
10 units
Angle
6 units
Digital Storage
7 units
Energy
8 units
Pressure
7 units
Power
6 units
Frequency
4 units
Fuel Economy
4 units
Data Transfer Rate
7 units
Electric Current
4 units
Voltage
4 units
Resistance
4 units
Force
5 units
Illuminance
3 units

Frequently Asked Questions

What types of units can I convert?

Our converter supports 20+ categories including Length, Weight, Temperature, Area, Volume, Speed, Time, Angle, Digital Storage, Energy, Pressure, Power, Frequency, Fuel Economy, Data Transfer Rate, Electric Current, Voltage, Resistance, Force, and Illuminance.

How accurate are the conversions?

Our converter uses precise mathematical formulas and standard conversion factors. Results are displayed with up to 10 decimal places for maximum accuracy. For most practical applications, 2-4 decimal places are sufficient.

Why is temperature conversion different?

Temperature uses a special formula rather than a simple multiplication factor because Celsius, Fahrenheit, and Kelvin have different zero points. For example, 0 C equals 32 F and 273.15 K. Our converter handles these special cases automatically.

Can I convert negative values?

Yes, negative values are valid for most units. For example, negative temperatures are common in scientific contexts. Simply enter a negative number and the converter will handle it correctly.

Is this tool free to use?

Absolutely! Our Universal Unit Converter is completely free with no registration required. We provide high-quality, accessible conversion tools for students, professionals, and anyone who needs to perform unit conversions quickly and accurately.