Convert length, weight and volume between metric and imperial units
A unit converter changes a measurement from one unit into another — length, weight or volume — so you can move between metric and imperial without doing the arithmetic. It answers the everyday questions that stall a recipe, a DIY project or reading a foreign spec sheet: how many centimetres is 6 feet, how many grams in a pound, how many millilitres in a cup. Each conversion is a fixed ratio, so the tool simply applies the right factor and gives you an exact result instantly.
What makes a converter genuinely useful is breadth and reliability across the units people actually mix up — metres and feet, kilograms and pounds, litres and gallons, Celsius-adjacent volume measures — without you having to remember whether a mile is 1.609 kilometres or look up that an inch is 2.54 centimetres exactly. It runs in your browser and updates as you type, so converting a list of measurements or sanity-checking a number takes seconds, with no app to install.
Exactly 2.54 centimetres. The inch is defined as 2.54 cm, so the conversion is exact rather than approximate — multiply inches by 2.54 for centimetres, or divide centimetres by 2.54 for inches.
No — they differ. A US gallon is about 3.785 litres while a UK (imperial) gallon is about 4.546 litres, so volume conversions depend on which system you mean. The same applies to pints and fluid ounces, which is a common source of recipe errors.
Many cross-system conversions are not round numbers — a kilometre is 0.621371 miles — so exact results carry several decimals. You can round to the precision you need; the underlying conversion stays accurate.
Not directly, because they measure different things: weight depends on the substance's density. Converting grams of flour to millilitres, for example, requires knowing the density. The converter handles unit-to-unit changes within the same kind of measurement.
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