they aren't!
They should start using ONLY metric units. It is high time that the United States starts using international units.
Metric units include millimeters, centimeters, decimeters, and meters.
I drank a litre of milk yesterday.
"Metric conversion" refers to the change from English units of measurement to metric units.
Grams and kilograms
In the metric system you use grams, in Standard Units you use ounces, pounds, and tons.
How do you change metric units?
base on what you measure to use the metric units.
A balance beam is 10 cm wide.
You use conversion factors.
I use metric units, such as meters, kilograms, and liters for measurements.
Oh yes, scientists only use metric SI units.
Metric units of measurement are more fun to say.
What metric unit would you use to measure a computer keyboard
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You would use kilograms (kg) to measure someone's mass in metric units.