What's 1.2 liters of water in -20 milliliters of water

I don't really know what you are asking so I am just going to give some answers to varies questions to try to answer what you need.

1 liter equals 1000 milliliters

That means that 1.2 liters of water is equal to 1200 milliliters of water
1.2 Lx1000 mL/L=1200 L
and 20 milliliters of water equals 0.020 L of water
20mLx(1 L/1000 mL)=0.020 L

Hope this helps you and you can leave a comment if you have any further questions or if my answer did not answer your question.