Convert 0.00021 Milligram per Liter to Part per Million

0.00021 mg/L (Milligram per Liter) is equal to 0.00021 ppm (Part per Million). To convert from Milligram per Liter to Part per Million, multiply by 1 or divide by 1.

• 0.00021 mg/L × 1 = 0.00021 ppm
• 0.00021 mg/L ÷ 1 = 0.00021 ppm