How many millimeters are there in 42.7 L?

Answer 1

A millimetre is a measure of distance while a litre is a measure of volume. The two measure different things and, according to basic principles of dimensional analysis, conversion from one to the other is not valid.

Added:

1. I have the impression that you mean millilitres (mL) i.s.o. millimetres. There are 1,000.0 mL in each litre (L).

   So 42.7 L is equal to 42,700.0 mL. (= 42.7*103 mL)

2. But maybe you've meant cubic millimetres (mm3, volume) i.s.o. (plain) millimetres (mm, length), then the answer is:

   1.0*106 mm3 = 1,000,000.0 mm3 = (1,000.0 cm3 = 1.0 dm3) = 1.0 Litre.

   So 42.7 L = 42.7*106 mm3

Answer 2

Millimeters can't be converted to liters. Millimeters measure length, while liters measure volume.