It is a metre.
We have to communicate with other people so we need to use the same system, in all the world the most common is the metric system. Americans like to use their system (for example, they use feet, inches..), it's not the best way to communicate with others! UK is predominantly metric in weight and volumes but still will uses imperial for distance /measuring now but may still used So it is necessary to use the same system, I have already said the best one (most common hence useful) is the metric system.
The best way to do measure conversion is to use a measuring cup or the metric system. Many times people use geometry to make the metric system to make their measurements.
cm
In liters
barman curls -2
Milligrams.
mm, cm or m.
Mililiter
You best bet would probably be to use kilograms.
The newton. (The kilogram is not a unit of weight or force.)
millimetres (or tenths of millimetres, if you have a micrometer)
The answer is a meter!!!!!!!!!!!