Milligram Per Liter to PPM Converter – mg/L to PPMBy / Milligram Per Liter to PPM Converter Milligram Per Liter to PPM Converter Enter Milligrams per Liter (mg/L): Select Substance: Water Milk Oil Olive Oil Honey Vinegar Sugar Solution Salt Solution Ethanol Alcohol Other (Custom) Enter Custom Substance Name: Enter Custom Density (g/cm³): Convert Conversion Result