750 ppb to ppm

750 ppb = 0.75 ppm

ppbppm
735 ppb0.735
740 ppb0.74
745 ppb0.745
7500.75
755 ppb0.755
760 ppb0.76
765 ppb0.765

750 ppb = 0.75 ppm

Formula

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