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Unit Converters

Free, fast and accurate converters for every everyday unit: length, weight, volume, temperature, area (including Indian land units), pressure, energy, power, speed, data, fuel economy, live currency rates, number bases and text case. Each one converts as you type.

Popular conversions

cm to inches feet to cm kg to lbs lbs to kg Celsius to Fahrenheit Fahrenheit to Celsius sq ft to sq m acres to sq ft cents to sq ft litres to gallons USD to INR AED to INR km/h to mph bar to psi hp to kW GB to MB km/L to L/100 km binary to decimal

All conversions

Every common conversion has its own page with the formula, worked examples and a full conversion table:

Length Converter

Weight and Mass Converter

Volume Converter

Temperature Converter

Celsius to Fahrenheit Fahrenheit to Celsius Celsius to Kelvin Kelvin to Celsius Fahrenheit to Kelvin Kelvin to Fahrenheit

Area Converter

Pressure Converter

Bar to Pounds per square inch Pounds per square inch to Bar Kilopascals to Pounds per square inch Pounds per square inch to Kilopascals Kilograms-force per cm² to Pounds per square inch Pounds per square inch to Kilograms-force per cm² Megapascals to Pounds per square inch Pounds per square inch to Megapascals Bar to Kilopascals Kilopascals to Bar Millimetres of mercury to Kilopascals Standard atmospheres to Bar Bar to Kilograms-force per cm²

Energy Converter

Kilowatt-hours to Joules Joules to Kilowatt-hours Kilocalories to Kilojoules Kilojoules to Kilocalories Calories to Joules Joules to Calories British thermal units to Kilowatt-hours Kilowatt-hours to British thermal units British thermal units to Joules Electronvolts to Joules

Power Converter

Horsepower to Kilowatts Kilowatts to Horsepower Watts to Horsepower Horsepower to Watts BTU per hour to Watts Watts to BTU per hour Tons of refrigeration to Kilowatts Kilowatts to Tons of refrigeration Metric horsepower to Kilowatts Kilowatts to Metric horsepower Tons of refrigeration to BTU per hour

Force Converter

Newtons to Kilograms-force Kilograms-force to Newtons Kilonewtons to Tonnes-force Tonnes-force to Kilonewtons Pounds-force to Newtons Newtons to Pounds-force Kilonewtons to Kilograms-force

Time Unit Converter

Hours to Minutes Minutes to Hours Minutes to Seconds Seconds to Minutes Days to Hours Hours to Days Weeks to Days Days to Weeks Years to Days Days to Years Months to Days Days to Months Milliseconds to Seconds Seconds to Milliseconds Hours to Seconds Seconds to Hours

Speed Converter

Kilometres per hour to Miles per hour Miles per hour to Kilometres per hour Metres per second to Kilometres per hour Kilometres per hour to Metres per second Knots to Kilometres per hour Kilometres per hour to Knots Knots to Miles per hour Miles per hour to Knots Mach to Kilometres per hour Feet per second to Metres per second

Angle Converter

Degrees to Radians Radians to Degrees Degrees to Gradians Gradians to Degrees

Fuel Consumption Converter

Kilometres per litre to Litres per 100 km Litres per 100 km to Kilometres per litre Miles per US gallon to Kilometres per litre Kilometres per litre to Miles per US gallon Miles per US gallon to Litres per 100 km Litres per 100 km to Miles per US gallon Miles per UK gallon to Litres per 100 km

Number Base Converter

Binary to Decimal Decimal to Binary Hexadecimal to Decimal Decimal to Hexadecimal Octal to Decimal Decimal to Octal Binary to Hexadecimal Hexadecimal to Binary

Data Storage Converter

Gigabytes to Megabytes Megabytes to Gigabytes Megabytes to Kilobytes Kilobytes to Megabytes Terabytes to Gigabytes Gigabytes to Terabytes Bytes to Bits Bits to Bytes Megabits to Megabytes Megabytes to Megabits Gibibytes to Gigabytes Gigabytes to Gibibytes Kilobytes to Bytes Megabytes to Bytes

Dry Volume Converter

US bushels to Litres Litres to US bushels

Currency Converter

USD to INR INR to USD EUR to INR INR to EUR GBP to INR INR to GBP AED to INR INR to AED SAR to INR QAR to INR KWD to INR OMR to INR CAD to INR AUD to INR SGD to INR JPY to INR USD to EUR

Accurate, exact conversion factors

Every converter uses exact, internationally agreed definitions: the inch is exactly 2.54 cm, the pound is exactly 0.45359237 kg, the US gallon is exactly 3.785411784 L and the standard atmosphere is exactly 101,325 Pa. Values are converted through a single base unit, so results stay consistent in every direction. You can choose how many decimals to show, and very large or very small results are shown in scientific notation.

Features on every converter

Two-way conversion: type in either box and the other one updates instantly.
Formula shown: see the exact factor or formula, and both directions (1 A = x B, 1 B = y A).
All units at once: your value converted into every unit in the category.
Conversion tables: ready-made tables in both directions, handy for printing.
Remembers your units: the converter reopens with the units you last used, and a share link keeps your exact conversion.
Indian units included: tola, quintal, cent, guntha, ground, marla, kanal, gaj, and the rupee in the currency converter.

Frequently asked questions

Are the conversions accurate?

Yes. Factors use exact international definitions or the most widely accepted standard values (for example, the thermochemical calorie and the International Table BTU). Results are calculated to about 15 significant digits and then rounded for display.

Are the currency rates live?

The currency converter uses mid-market rates for 160+ currencies that are updated every day, plus European Central Bank reference rates for the history chart.

Do the converters work offline?

Yes. Once a converter page has been opened, it works without an internet connection, except for fetching new currency rates.

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