20.5 mg/L to ppm

20.5 mg/L = 20.5 ppm

mg/Lppm
14.5 mg/L14.5
16.5 mg/L16.5
18.5 mg/L18.5
20.520.5
22.5 mg/L22.5
24.5 mg/L24.5
26.5 mg/L26.5

20.5 mg/L = 20.5 ppm

Formula

1 ppm = 1 mg/L (aqueous, density ≈ 1 kg/L) · 1 ppb = 0.001 mg/L · 1% = 10,000 ppm