Unit Converter

Fast, free conversions between metric and imperial units. Pick a converter to get started.

Length

Length Conversions

Centimeters to Inches
cm → in
Inches to Centimeters
in → cm
Millimeters to Inches
mm → in
Inches to Millimeters
in → mm
Centimeters to Feet
cm → ft
Feet to Centimeters
ft → cm
Inches to Feet
in → ft
Feet to Inches
ft → in
Feet to Yards
ft → yd
Yards to Feet
yd → ft
Meters to Feet
m → ft
Feet to Meters
ft → m
Yards to Meters
yd → m
Meters to Yards
m → yd
Miles to Kilometers
mi → km
Kilometers to Miles
km → mi
Weight

Weight Conversions

Milligrams to Grams
mg → g
Grams to Milligrams
g → mg
Grams to Ounces
g → oz
Ounces to Grams
oz → g
Ounces to Pounds
oz → lb
Pounds to Ounces
lb → oz
Kilograms to Pounds
kg → lb
Pounds to Kilograms
lb → kg
Stones to Kilograms
st → kg
Kilograms to Stones
kg → st
Stones to Pounds
st → lb
Pounds to Stones
lb → st
Temperature

Temperature Conversions

Fahrenheit to Celsius
°F → °C
Celsius to Fahrenheit
°C → °F
Celsius to Kelvin
°C → K
Kelvin to Celsius
K → °C
Fahrenheit to Kelvin
°F → K
Kelvin to Fahrenheit
K → °F
Volume

Volume Conversions

Teaspoons to Milliliters
tsp → mL
Milliliters to Teaspoons
mL → tsp
Tablespoons to Milliliters
tbsp → mL
Milliliters to Tablespoons
mL → tbsp
Fluid Ounces to Milliliters
fl oz → mL
Milliliters to Fluid Ounces
mL → fl oz
Milliliters to Cups
mL → cup
Cups to Milliliters
cup → mL
Pints to Liters
pt → L
Liters to Pints
L → pt
Quarts to Liters
qt → L
Liters to Quarts
L → qt
Liters to Gallons
L → gal
Gallons to Liters
gal → L
Area

Area Conversions

Square Feet to Square Meters
sq ft → sq m
Square Meters to Square Feet
sq m → sq ft
Acres to Hectares
ac → ha
Hectares to Acres
ha → ac
Square Miles to Square Kilometers
sq mi → sq km
Square Kilometers to Square Miles
sq km → sq mi
Speed

Speed Conversions

Miles per Hour to Kilometers per Hour
mph → km/h
Kilometers per Hour to Miles per Hour
km/h → mph
Knots to Kilometers per Hour
kn → km/h
Kilometers per Hour to Knots
km/h → kn
Meters per Second to Kilometers per Hour
m/s → km/h
Kilometers per Hour to Meters per Second
km/h → m/s
Pressure

Pressure Conversions

PSI to Bar
psi → bar
Bar to PSI
bar → psi
PSI to Kilopascals
psi → kPa
Kilopascals to PSI
kPa → psi
Atmospheres to PSI
atm → psi
PSI to Atmospheres
psi → atm
Energy

Energy Conversions

Calories to Joules
cal → J
Joules to Calories
J → cal
Kilocalories to Kilojoules
kcal → kJ
Kilojoules to Kilocalories
kJ → kcal
Kilowatt Hours to Kilojoules
kWh → kJ
Kilojoules to Kilowatt Hours
kJ → kWh
Digital Storage

Digital Storage Conversions

Kilobytes to Megabytes
KB → MB
Megabytes to Kilobytes
MB → KB
Megabytes to Gigabytes
MB → GB
Gigabytes to Megabytes
GB → MB
Gigabytes to Terabytes
GB → TB
Terabytes to Gigabytes
TB → GB
Time

Time Conversions

Seconds to Minutes
sec → min
Minutes to Seconds
min → sec
Minutes to Hours
min → hr
Hours to Minutes
hr → min
Hours to Days
hr → day
Days to Hours
day → hr
Days to Weeks
day → wk
Weeks to Days
wk → day
Days to Years
day → yr
Years to Days
yr → day
Weeks to Months
wk → mo
Months to Weeks
mo → wk
Months to Years
mo → yr
Years to Months
yr → mo
Power

Power Conversions

Watts to Kilowatts
W → kW
Kilowatts to Watts
kW → W
Watts to Horsepower
W → hp
Horsepower to Watts
hp → W
Kilowatts to Horsepower
kW → hp
Horsepower to Kilowatts
hp → kW
BTU per Hour to Watts
BTU/hr → W
Watts to BTU per Hour
W → BTU/hr
Kilowatts to Megawatts
kW → MW
Megawatts to Kilowatts
MW → kW
Cooking

Cooking Conversions

Cups to Tablespoons
cup → tbsp
Tablespoons to Cups
tbsp → cup
Tablespoons to Teaspoons
tbsp → tsp
Teaspoons to Tablespoons
tsp → tbsp
Cups to Fluid Ounces
cup → fl oz
Fluid Ounces to Cups
fl oz → cup
Tablespoons to Fluid Ounces
tbsp → fl oz
Fluid Ounces to Tablespoons
fl oz → tbsp
Cups to Pints
cup → pt
Pints to Cups
pt → cup
Cups to Quarts
cup → qt
Quarts to Cups
qt → cup
Frequency

Frequency Conversions

Hertz to Kilohertz
Hz → kHz
Kilohertz to Hertz
kHz → Hz
Kilohertz to Megahertz
kHz → MHz
Megahertz to Kilohertz
MHz → kHz
Megahertz to Gigahertz
MHz → GHz
Gigahertz to Megahertz
GHz → MHz
Hertz to Megahertz
Hz → MHz
Megahertz to Hertz
MHz → Hz
Angle

Angle Conversions

Degrees to Radians
° → rad
Radians to Degrees
rad → °
Degrees to Gradians
° → gon
Gradians to Degrees
gon → °
Radians to Gradians
rad → gon
Gradians to Radians
gon → rad
Degrees to Arcminutes
° → ′
Arcminutes to Degrees
′ → °
Force

Force Conversions

Newtons to Pound-force
N → lbf
Pound-force to Newtons
lbf → N
Newtons to Kilonewtons
N → kN
Kilonewtons to Newtons
kN → N
Newtons to Kilogram-force
N → kgf
Kilogram-force to Newtons
kgf → N
Pound-force to Kilogram-force
lbf → kgf
Kilogram-force to Pound-force
kgf → lbf
Fuel Economy

Fuel Economy Conversions

Miles per Gallon to Kilometers per Liter
mpg → km/L
Kilometers per Liter to Miles per Gallon
km/L → mpg
Miles per Gallon to Liters per 100km
mpg → L/100km
Liters per 100km to Miles per Gallon
L/100km → mpg
Kilometers per Liter to Liters per 100km
km/L → L/100km
Liters per 100km to Kilometers per Liter
L/100km → km/L

About UnitLookup

UnitLookup provides accurate, instant conversions between metric and imperial units. Whether you need to convert centimeters to inches for a project, check your weight in kilograms, convert oven temperatures from Celsius to Fahrenheit, or measure liquids in cups and liters — we have you covered. Every conversion includes the formula, a reference table, and links to related conversions.