Unit Converter

Unit conversion rescales a quantity from one unit to another while keeping the physical amount the same. This tool covers four fixed categories. Length, weight, and time are linear: each unit is stored as a factor relative to a base (meters, grams, seconds), so converting means multiplying by the source factor and dividing by the target factor. For example, 1 mile is stored as 1609.34 meters and 1 foot as 0.3048 meters, so miles to feet is a multiply and a divide. Because every other unit in the category is computed from the same input, the tool shows the full set of conversions in one table rather than a single from-to pair. Temperature is handled separately because Celsius, Fahrenheit, and Kelvin do not share a zero point: the tool first converts the input to Celsius, then out to the target scale, applying the (C x 9/5) + 32 and +273.15 offsets. A few constants are rounded (a mile is 1609.34 m rather than the exact 1609.344 m) and results are rounded to six decimal places, so this is a quick everyday converter, not a metrology-grade reference. The weight 'ton' is the metric tonne (1000 kg), and 'year' is the 365.25-day Julian year.