US Gallon (gal)
The US gallon, denoted as gal, is a unit of volume that equals approximately 3.785 liters. It comes from old English wine gallons and became official in the US in the 1800s. People in the US still use it extensively for fuel, beverages, and cooking. The US gallon is smaller than the British one, which leads to different numbers in global trade and when comparing fuel use. Although most countries use metric units, the US gallon remains a significant part of US life.
Cubic Centimeter (cm³ or cc)
A cubic centimeter (cm³/cc) is a metric volume unit equivalent to one milliliter. Established with the metric system in the 1700s, it is frequently employed in scientific, engineering, and medical settings to measure small quantities accurately. The abbreviation “cc” is particularly prevalent in medical prescriptions for liquids and in the automotive field for specifying engine size. Since it matches the volume of a milliliter, the cubic centimeter is easily compatible with the rest of the metric system while remaining important in specialized applications.