17.5 % to ppm

17.5 % = 175,000 ppm

%ppm
14.5 %145,000
15.5 %155,000
16.5 %165,000
17.5175,000
18.5 %185,000
19.5 %195,000
20.5 %205,000

17.5 % = 175,000 ppm

Formula

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