Conversor de Unidades

Convierte entre unidades comunes de longitud, masa, temperatura, tiempo y datos. Actualización en vivo, copia el resultado con un clic, intercambia las unidades cuando elegiste las direcciones al revés. Todo se ejecuta en tu navegador: nada se sube, sin inicio de sesión, sin rastreo.

Categoría
Referencia de unidades (factores a la unidad base)
UnidadFactor a base

About this tool

Unit Converter translates between units in nine categories: length, mass, temperature, area, volume, time, speed, pressure, and energy. Each conversion uses the canonical SI definition as the bridge, so the math is consistent regardless of which pair of units you pick. The temperature category is the special case — it is not a simple multiplier (0°C is not 0°F) — and the page shows the formula it uses for clarity. The output reports the result with a configurable precision (2 to 12 significant figures).

When to use it

  • Converting a recipe between metric and US customary units without re-deriving the math
  • Translating a sensor reading from PSI to bar or kPa for an engineering document
  • Working out the energy content of food in kcal vs kJ when reading a non-US nutrition label
  • Converting a pace (min/km to min/mi) for a running log

When not to use it

  • You need currency conversion — exchange rates change daily and require a live feed. Use a financial tool for that
  • You need to convert between unit systems for scientific work where significant figures matter beyond 12 — the page rounds at the chosen precision
  • You need a single coherent unit system across many categories — SI is the bridge, but if you want the result in a specific system, do the math in your head and check with this tool, do not rely on it for chain conversions across categories

Frequently asked questions

Why does temperature not have a single conversion factor?

Temperature scales have different zero points (0°C is the freezing point of water, 0°F is colder than that), so a linear conversion requires both a scale and an offset. The page shows the formula it uses (°F = °C × 9/5 + 32, etc.) so you can audit the math.

Is the precision high enough for engineering?

Up to 12 significant figures, which is well beyond the precision of any practical unit conversion. The math is exact for the categories listed — for currency or for categories that depend on physical constants (energy, pressure), the precision is limited by the constant used in the table.

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