Unit Shift Pro

Source
Target
2.54

Length equivalences

Conversion Ratios

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Online · SI System and Imperial Support · Instant calculations

Metric & Imperial Units: Systems and conversion ratios

The Metric system is an international system of measurement based on decimal units, using units like meters, grams, liters, and degrees Celsius. It is standard globally.

Imperial System Usage:

The Imperial system is a system of weights and measures originally used in Great Britain, utilizing inches, pounds, gallons, and degrees Fahrenheit. It remains widely used in the United States.

Common Conversion Factors:

  • Length: 1 inch is exactly equal to 2.54 centimeters.
  • Weight: 1 pound (lb) is roughly equal to 0.45359237 kilograms (kg).
  • Temperature: To convert Fahrenheit to Celsius: $C = (F - 32) \times \frac59$.