Concentration Converter

The Concentration Converter page converts your input to a shared reference unit and then recalculates every supported unit from that base.

When a conversion is approximate rather than purely linear, the page also includes explanatory notes so the tool remains practical for learning and quick reference.

There are multiple concentration unit systems in use worldwide, including ppm (parts per million), ppb (parts per billion), percent (%), mg/L (milligrams per liter), and g/L (grams per liter). The approximations mg/L ≈ ppm and μg/L ≈ ppb are valid for water-based solutions and are commonly used in environmental and laboratory contexts.