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Unit Converter Centre

Precision unit converters for science and engineering — length, mass, temperature, pressure, energy and beyond. Formula-backed and always accurate.

Unit Converters

Physical measurement units

Weight / Mass Converter

kg, lb, oz, g, stone and more

Speed Converter

km/h, mph, m/s, knots

Energy Converter

Joules, calories, BTU, kWh

Pressure Converter

Pa, psi, bar, atm, mmHg

Power Converter

Watts, horsepower, BTU/hr

Volume Converter

Liters, gallons, cups, ml

Angle Converter

Degrees, radians, gradians

Metric Units Converter

All metric prefixes

Length & Distance

Centimetres, metres, feet, inches, and miles

Length / Distance Converter

All length conversions in one place

Centimeters to Inches

cm → in conversion

Inches to Centimeters

in → cm conversion

Meters to Feet

m → ft conversion

Height Converter

ft/in ↔ cm height converter

Kilograms to Pounds

kg → lb weight converter

Pounds to Kilograms

lb → kg weight converter

Area Conversion

Square feet, square metres, hectares, and more

Area Converter

All area unit conversions

Acres to Square Feet

acres → ft² conversion

Square Feet to Acres

ft² → acres conversion

Sq Feet to Sq Meters

ft² → m² conversion

Sq Meters to Sq Feet

m² → ft² conversion

Temperature Converter

Celsius, Fahrenheit, Kelvin, and Rankine

Temperature Converter

Convert between all temperature scales

Celsius to Fahrenheit

°C → °F

Fahrenheit to Celsius

°F → °C

Celsius to Kelvin

°C → K

Kelvin to Celsius

K → °C

Fahrenheit to Kelvin

°F → K

Decimal, Fractions & Percent

Convert between number representations

Decimal to Fraction

0.75 → 3/4

Fraction to Decimal

3/4 → 0.75

Decimal to Percent

0.75 → 75%

Percent to Decimal

75% → 0.75

Fraction to Percent

3/4 → 75%

Percent to Fraction

75% → 3/4

Mixed Number to Decimal

1 3/4 → 1.75

Time Conversion

Hours, minutes, seconds, and time formats

Time Converter

All time unit conversions

Minutes to Hours

min → hr and min

Hours to Minutes

hr → total minutes

Minutes to Decimal Hours

90 min → 1.5 hr

Military Time Converter

12h ↔ 24h time

More Converters

Numbers, currencies, Roman numerals, and more

Numbers to Words

1,234 → one thousand two hundred...

Roman Numeral Converter

2024 ↔ MMXXIV

Scientific Notation

1,500,000 ↔ 1.5 × 10⁶

Currency Converter

USD, EUR, GBP and more

Cooking Conversions

Cups, tbsp, liters and more

Storage Converter

Bytes, KB, MB, GB, TB

Weight Converter

Specific weight-unit conversions

Grams to Ounces

g → oz

Ounces to Grams

oz → g

Stone to Kilograms

stone → kg

Kilograms to Stone

kg → stone

Stone to Pounds

stone → lb

Pounds to Stone

lb → stone

Metric Tons to Pounds

tonnes → lb

Volume Converter

Specific volume-unit conversions

Liters to US Gallons

L → US gal

Gallons to Liters

gal → L

Milliliters to Fluid Oz

mL → fl oz

Fluid Oz to Milliliters

fl oz → mL

Cups to Milliliters

cups → mL

Milliliters to Cups

mL → cups

Pints to Liters

pt → L

Quarts to Liters

qt → L

Length Converter

Specific length-unit conversions

Kilometers to Miles

km → mi

Miles to Kilometers

mi → km

Feet to Meters

ft → m

Meters to Feet

m → ft

Millimeters to Inches

mm → in

Inches to Millimeters

in → mm

Yards to Meters

yd → m

Speed Converter

Specific speed-unit conversions

MPH to Kilometers per Hour

mph → km/h

Kilometers per Hour to MPH

km/h → mph

Knots to MPH

knots → mph

Miles per Hour to Meters per Second

mph → m/s

Meters per Second to Kilometers per Hour

m/s → km/h

Cooking Measurements

Convert cooking and kitchen measurements

Tablespoons to Cups

tbsp → cups

Cups to Tablespoons

cups → tbsp

Teaspoons to Tablespoons

tsp → tbsp

Tablespoons to Teaspoons

tbsp → tsp

Teaspoons to Milliliters

tsp → mL

Cups to Grams

cups → g

Ounces to Grams (Cooking)

oz → g

Recipe Scaler

Scale recipes

Digital Storage

Convert digital storage units

Bits & Bytes

bits ↔ bytes

Bytes to Kilobytes

B → KB

Kilobytes to Megabytes

KB → MB

Megabytes to Gigabytes

MB → GB

Gigabytes to Terabytes

GB → TB

Bandwidth Converter

Mbps, Gbps

Pressure & Energy

Convert pressure and energy units

PSI to Bar

psi → bar

Bar to PSI

bar → psi

Calories to Joules

cal → J

Kilowatt-hours to Joules

kWh → J

BTU to Joules

BTU → J

Salary & Pay

Convert salary and pay rates

Annual Salary to Hourly

Annual → Hourly

Hourly to Annual Salary

Hourly → Annual

Annual to Monthly Pay

Annual → Monthly

Daily Rate to Hourly

Daily → Hourly

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