How many milliliters are in half a meter?

Answer 1

There is no equivalence.

A metre is a measure of length or distance while a millilitre 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 without some addition information.

Answer 2

There can be no conversion. A metre is a measure of length in 1-dimensional space while a millilitre is a measure of volume in 3-dimensional space. The two measure different characteristics and, according to the most basic principles of dimensional analysis, any attempt at comparisons or conversions between the two are fundamentally flawed.

Answer 3

500ml