6 ppb to ppm

6 ppb = 0.006 ppm

ppbppm
3 ppb0.003
4 ppb0.004
5 ppb0.005
60.006
7 ppb0.007
8 ppb0.008
9 ppb0.009

6 ppb = 0.006 ppm

Formula

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