How did they come up with the conversion of 1cm cuber to be 1ml?

Answer 1

The conversion of 1 cubic centimeter (cm³) to 1 milliliter (mL) is based on the definition of these units. A cubic centimeter is defined as the volume of a cube with sides of 1 centimeter, which equals 1 mL because the milliliter is defined as the volume of 1 gram of water at 4°C, and it occupies the same space as 1 cm³. Therefore, both measurements represent the same volume, establishing the direct equivalence of 1 cm³ to 1 mL.