Convertidor de unidades

Whether you are a student wrestling with a physics assignment, a chef converting cups to millilitres, or an engineer reconciling metric and imperial measurements, a reliable unit converter is one of the most universally useful tools in existence. Our converter spans length, weight, volume, area, speed, pressure and more — covering dozens of units across every major measurement system, from the metric SI standard to the imperial and US customary systems used across the English-speaking world. Every conversion is executed instantly in your browser, with no rounding surprises and no hidden approximations.

Unit conversion and temperature conversion are two of the most commonly paired tasks in science, cooking and everyday life. If you need to convert Celsius to Fahrenheit or Kelvin alongside your length or weight conversions, our dedicated Temperature Converter handles every major scale — Celsius, Fahrenheit, Kelvin and Rankine — with the same instantaneous precision.

For those working with digital file sizes and data storage, converting between bytes, kilobytes, megabytes, gigabytes and terabytes requires its own specialised logic. Our Data Storage Converter handles both decimal (SI) and binary (IEC) standards — an essential distinction that is often the source of confusion when comparing hard drive capacities and actual usable storage.

Métrico vs imperial: por qué coexisten dos sistemas

El sistema métrico (SI) es usado por todos los países excepto EE.UU., Liberia y Myanmar. La persistencia del imperial en EE.UU. crea fricciones diarias para quienes trabajan internacionalmente.

El error de conversión más costoso de la historia

En 1999, el Mars Climate Orbiter de la NASA se perdió porque un equipo usaba Newtons métricos y otro libras-fuerza imperiales — un error de 327 millones de dólares.