Unit Conversions

Convert temperature, length, area, volume, mass and more

Unit conversions make it easy to switch between different measurement systems, whether you’re changing Celsius to Fahrenheit, kilometers to miles, or square meters to square feet. This category is useful for students, exam revision, and everyday work in science, engineering, travel, cooking, and trade, where accurate conversions help you compare values, solve problems correctly, and communicate measurements clearly.

Celsius to Fahrenheit

°F = °C \times \frac{9}{5} + 32

Convert a temperature from Celsius to Fahrenheit.

Fahrenheit to Celsius

°C = (°F - 32) \times \frac{5}{9}

Convert a temperature from Fahrenheit to Celsius.

Celsius to Kelvin

K = °C + 273.15

Convert Celsius to the absolute Kelvin scale.

Kelvin to Celsius

°C = K - 273.15

Convert Kelvin to Celsius.

Kilometers to Miles

\text{mi} = \text{km} \times 0.621371

Convert kilometers to miles.

Miles to Kilometers

\text{km} = \text{mi} \times 1.60934

Convert miles to kilometers.

Meters to Feet

\text{ft} = \text{m} \times 3.28084

Convert meters to feet.

Feet to Meters

\text{m} = \text{ft} \times 0.3048

Convert feet to meters.

Inches to Centimeters

\text{cm} = \text{in} \times 2.54

Convert inches to centimeters.

Nautical Miles to Kilometers

\text{km} = \text{nmi} \times 1.852

Convert nautical miles to kilometers.

Square Meters to Square Feet

\text{ft}^2 = \text{m}^2 \times 10.7639

Convert area from square meters to square feet.

Acres to Square Meters

\text{m}^2 = \text{acre} \times 4046.86

Convert acres to square meters.

Hectares to Acres

\text{acre} = \text{ha} \times 2.47105

Convert hectares to acres.

Square Km to Square Miles

\text{mi}^2 = \text{km}^2 \times 0.386102

Convert area from square kilometers to square miles.

Liters to US Gallons

\text{gal} = \text{L} \times 0.264172

Convert liters to US gallons.

US Gallons to Liters

\text{L} = \text{gal} \times 3.78541

Convert US gallons to liters.

Cubic Meters to Cubic Feet

\text{ft}^3 = \text{m}^3 \times 35.3147

Convert volume from cubic meters to cubic feet.

Milliliters to Fluid Ounces

\text{fl oz} = \text{mL} \times 0.033814

Convert milliliters to US fluid ounces.

Kilograms to Pounds

\text{lb} = \text{kg} \times 2.20462

Convert kilograms to pounds.

Pounds to Kilograms

\text{kg} = \text{lb} \times 0.453592

Convert pounds to kilograms.

Grams to Ounces

\text{oz} = \text{g} \times 0.035274

Convert grams to ounces.

Metric Tonnes to Pounds

\text{lb} = \text{t} \times 2204.62

Convert metric tonnes to pounds.

km/h to mph

\text{mph} = \text{km/h} \times 0.621371

Convert speed from km/h to mph.

m/s to km/h

\text{km/h} = \text{m/s} \times 3.6

Convert speed from meters per second to km/h.

Calories to Joules

\text{J} = \text{cal} \times 4.184

Convert calories to joules.

kWh to Joules

\text{J} = \text{kWh} \times 3.6\times10^6

Convert kilowatt-hours to joules.

Atmospheres to Pascals

\text{Pa} = \text{atm} \times 101325

Convert atmospheres to pascals.

Bar to PSI

\text{psi} = \text{bar} \times 14.5038

Convert bar to pounds per square inch.

Degrees to Radians

\text{rad} = \text{deg} \times \frac{\pi}{180}

Convert an angle from degrees to radians.

Radians to Degrees

\text{deg} = \text{rad} \times \frac{180}{\pi}

Convert an angle from radians to degrees.

Gigabytes to Megabytes

\text{MB} = \text{GB} \times 1024

Convert gigabytes to megabytes (binary).

Kilometers to Miles

\text{mi} = km \times 0.6214

Convert kilometers to miles.

Miles to Kilometers

km = mi \times 1.6093

Convert miles to kilometers.

Kilograms to Pounds

lb = kg \times 2.2046

Convert kilograms to pounds.

Pounds to Kilograms

kg = lb \times 0.4536

Convert pounds to kilograms.

Inches to Centimeters

cm = in \times 2.54

Convert inches to centimeters.

Liters to US Gallons

gal = L \times 0.2642

Convert liters to US gallons.

Celsius to Kelvin

K = C + 273.15

Convert Celsius to Kelvin.

MPH to KM/H

km/h = mph \times 1.6093

Convert miles per hour to kilometers per hour.

Calories to Joules

J = cal \times 4.184

Convert calories to joules.

Atmospheres to Pascals

Pa = atm \times 101325

Convert atmospheres to pascals.

Horsepower to Watts

W = hp \times 745.7

Convert horsepower to watts.

Bytes to Bits

bits = bytes \times 8

Convert bytes to bits.

Radians to Degrees

\deg = rad \times \frac{180}{\pi}

Convert radians to degrees.

Acres to Square Meters

m^2 = acre \times 4046.9

Convert acres to square meters.

Feet to Meters

m = ft \times 0.3048

Convert feet to meters.