A block cut from asteroid rock was measured to have dimensions: 13.3mm x 12.4mm x 15.2mm. convert the dimensions into si units?

SI units is a system of physical units based on the meter, kilogram, second, ampere, kelvin, candela, and mole, together with a set of prefixes to indicate multiplication or division by a power of ten. Looking at the units of the dimensions I believe it is in the SI units. Hope this answers the question.