Units of measure

This comes from the official SI manual and is non-negotiable for translations.

The numerical value always precedes the unit and a space is always used to separate the unit from the number. They are not followed by a period except at the end of a sentence, and one must neither use the plural (e.g. “kgs” and “Ls”) nor mix unit symbols (e.g. “kg” or “L”) and unit names (e.g. “Kilogram” or “Liter”) within one expression, since names are not mathematical entities.

Unit symbols are mathematical entities and not abbreviations.

e.g. 10 cm, 42 L, 69 kg

Not all metric prefixes are capitalized; see here for more details: Metric prefix