The metric system is different from the US standard measurements, which may cause confusion when conversion becomes necessary. By understanding the metric measurement and their US equivalents, problems with figures can be avoided. Use a metric system chart and make precise conversions.
Meters and feet may be from two different measuring systems but knowing the conversion factor between the two makes converting one unit into another a simple operation.
You don’t usually convert liters to gallons except if your work requires it or if it’s for your kid’s school project or some other reason. There are a lot of tools you can use to make the conversion or you can do the math yourself. Take note that there are different units that are called gallons nowadays.12
Simply knowing that for every inch there are 2.54 centimeters is enough information for anyone to convert inches to centimeters.