Some common exact definitions include 1 inch = 25.4 millimeters, 1 international foot = 0.3048 meters, 1 pound avoirdupois = 0.45359237 kilograms and 1 US liquid gallon = 3.785411784 liters. A US gallon is not the same as an imperial gallon. Prefer explicitly named units rather than generic labels like “gallon.”
Important note
The calculation is performed locally from the listed unit definitions. Display results are rounded for readability; high-precision and regulated work should use the governing standard and appropriate significant figures.
Related conversions: Length, Mass & weight, Temperature, Digital storage, Energy, Power.
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