Milliliter (mL)
The milliliter, written as mL, is a metric unit for volume. It is one-thousandth of a liter or one cubic centimeter. It was established as part of the metric system and is used worldwide in medicine, cooking, and science. Because it measures small amounts, it is ideal for both everyday and laboratory use. It is the same size as a cubic centimeter, so people in different fields can easily understand it. This makes the milliliter one of the most useful and common units of measurement in the liter.
Cubic Inch (in³)
The cubic inch, symbol in³, is a US customary and imperial unit representing the volume of a cube with each side one inch in length. Its use dates back centuries in English measurement systems. Today, it is particularly significant in the automotive industry, where it historically defined engine displacement before metric liters became common. One cubic inch equals 16.387 milliliters, making it a small but practical unit for precision engineering, manufacturing, and certain niche applications.