3 % to ppm

3 % = 30,000 ppm

%ppm
1.5 %15,000
2 %20,000
2.5 %25,000
330,000
3.5 %35,000
4 %40,000
4.5 %45,000

3 % = 30,000 ppm

Formula

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