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Conversor de unidades: longitud, peso, temperatura, volumen y más

Elige una categoría, introduce un valor y convierte al instante entre unidades métricas, imperiales y otras, con un botón para intercambiarlas.

Calculadora

Conversiones populares
Resultado0.621371191 km = 0.62137119 mi
Convertir 1 km a todas las unidades
Milímetro (mm)1,000,000
Centímetro (cm)100,000
Metro (m)1,000
Kilómetro (km)1
Pulgada (in)39,370.07874016
Pie (ft)3,280.83989501
Yarda (yd)1,093.61329834
Milla (mi)0.62137119
Micrómetro (µm)1,000,000,000
Milla náutica (nmi)0.5399568

Estimaciones solo para planificar. No constituyen asesoramiento fiscal ni financiero. Última verificación: 2026-10-25

La guía detallada que aparece a continuación (explicación, ejemplo resuelto, limitaciones, preguntas frecuentes y fuentes) está por ahora solo en inglés.

Conversor de unidades: cómo funciona

Every unit in a category is defined as a multiple of one base unit: metres for length, kilograms for mass, litres for volume. To convert, the value is first multiplied into the base unit and then divided by the target unit's factor. For example, to go from miles to kilometres the tool uses 1 mile = 1,609.344 m and 1 km = 1,000 m.

Temperature is the exception because the scales do not share a zero. Celsius, Fahrenheit and Kelvin are converted with their own formulas. The converter handles length, weight, volume, area, speed, digital storage, time and temperature, and it runs entirely in your browser.

Fórmula e hipótesis

Fórmula

  • Valor × (factor de la unidad de origen ÷ factor de la unidad de destino); la temperatura usa sus propias fórmulas.

Hipótesis

  • Para las unidades de volumen se usan las medidas habituales de EE. UU. (taza, galón, etc.).
  • El almacenamiento digital usa unidades basadas en 1024.

Ejemplo resuelto

Three typical conversions

  1. 5 miles to kilometres: 5 × 1,609.344 ÷ 1,000 = 8.04672 km.
  2. 72 °F to Celsius: (72 − 32) × 5 ÷ 9 = 22.22 °C.
  3. 1 kilogram to pounds: 1 ÷ 0.45359237 = 2.2046 lb.

Resultado: 8.04672 km, 22.22 °C and 2.2046 lb.

Limitaciones

  • Volume uses US customary units (cup, gallon, fluid ounce). A UK (imperial) gallon is about 4.546 litres, whereas the US gallon used here is 3.785 litres.
  • Digital storage uses 1,024-based units (1 KB = 1,024 bytes), the way many operating systems report it. Storage makers often use 1,000, so a "500 GB" drive can show as less.
  • A year is taken as 365 days, with no leap years or calendar rules.
  • Results are shown rounded; for scientific or legal use, check the exact definitions.

Preguntas frecuentes

How do I convert Fahrenheit to Celsius?

Subtract 32 and multiply by 5/9. For 72 °F that is 40 × 5/9 = 22.22 °C. To go the other way, multiply by 9/5 and add 32.

Are US and UK gallons the same?

No. This converter uses the US gallon (3.785 L). The UK imperial gallon is about 4.546 L.

Why is my hard drive smaller than advertised?

Drive makers count 1 GB as 1,000,000,000 bytes, while many operating systems divide by 1,024 per step. This tool uses 1,024.

What is a quintal?

In India and some other countries a quintal is 100 kilograms. It is included for convenience.

Are the conversion factors exact?

Inch, foot, yard, mile, pound and ounce are defined exactly in metric terms (for example 1 inch = 25.4 mm). Others are rounded to a number of digits that is more than enough for everyday use.

How do I convert metric to imperial units?

Multiply by a conversion factor: 1 inch is exactly 2.54 cm, 1 mile is exactly 1.609344 km and 1 pound is exactly 0.45359237 kg. For example, 5 miles × 1.609344 = 8.04672 km. To go from imperial to metric, multiply by the factor; to go back, divide by it.

What is the difference between metric and imperial units?

Metric (SI) units such as metres, grams and litres are decimal, so each step is a power of ten. Imperial and US customary units such as inches, pounds and gallons use irregular steps, for example 12 inches in a foot and 16 ounces in a pound. Most countries use metric; the US still uses customary units in daily life.

Fuentes

Datos de la calculadora verificados por última vez: 2026-10-25. Estimaciones solo para planificar; no constituyen asesoramiento fiscal ni financiero.

¿Y ahora qué?

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