Any unit can be used, but the most practical would be yards (for standard measurement) or meters (for metric measurement).
Meters are used as the unit for length in most countries, but some, such as the United States, use a different system of measurement.
There are many units for measurement of length .But , for the measurement of pizza the most appropriate unit used is inches.
The Planck length
Well the SI unit of length is the meter, and SI is the first standard measurement system...
meter, inch, yard
The meter is used to measure length.
The cubit was a unit of measurement for length