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Calculators Cafe

Unit Converters

Unit converters are the quiet workhorses of the web. These tools convert between metric and imperial units using precise, standard conversion factors, with a full table of equivalents.

Length Weight Temperature Area Volume Speed Time Data Storage Pressure Energy Number to Words

11 converters · 11 shown

Area Converter

Area

Convert between square metres, square feet, hectares, acres, square kilometres and more.

Square millimetres (mm²) Square centimetres (cm²) Square metres (m²) Square kilometres (km²) Square feet (ft²) Square yards (yd²) Hectares (ha) Acres
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Volume Converter

Volume

Convert litres, millilitres, cubic metres, gallons, quarts, pints and cups.

Millilitres (ml) Litres (L) Cubic metres (m³) US gallons (gal) US quarts (qt) US pints (pt) US cups US fluid ounces (fl oz)

Popular conversions

liters to gallons
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Speed Converter

Speed

Convert between km/h, mph, metres per second, feet per second and knots.

Metres per second (m/s) Kilometres per hour (km/h) Miles per hour (mph) Feet per second (ft/s) Knots (kn)

Popular conversions

kmh to mph
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Time Converter

Time

Convert between milliseconds, seconds, minutes, hours, days, weeks, months and years.

Milliseconds (ms) Seconds (s) Minutes (min) Hours (h) Days Weeks Months (average) Years (average)

Popular conversions

hours to minutes days to hours
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Data Storage Converter

Data

Convert between bits, bytes, kilobytes, megabytes, gigabytes and terabytes.

Bits (b) Bytes (B) Kilobytes (KB) Megabytes (MB) Gigabytes (GB) Terabytes (TB)

Popular conversions

gb to mb
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Pressure Converter

Pressure

Convert between pascals, kilopascals, bar, psi, atmospheres and torr.

Pascals (Pa) Kilopascals (kPa) Bar Pounds per square inch (psi) Atmospheres (atm) Torr (mmHg)

Popular conversions

kpa to psi
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Energy Converter

Energy

Convert joules, kilojoules, calories, kilocalories, watt-hours and kilowatt-hours.

Joules (J) Kilojoules (kJ) Calories (cal) Kilocalories (kcal, food Cal) Watt-hours (Wh) Kilowatt-hours (kWh)

Popular conversions

kcal to kj
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Number to Words Converter

Words

Convert any number into words in the Indian (lakh, crore) or international (million, billion) system.

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Please note: Conversions use standard factors and are accurate for everyday use. For scientific, legal or safety-critical work, verify with an authoritative reference.

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