25 % to ppm

25 % = 250,000 ppm

%ppm
19 %190,000
21 %210,000
23 %230,000
25250,000
27 %270,000
29 %290,000
31 %310,000

25 % = 250,000 ppm

Formula

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