Concentration Converter
Convert between g/L, mg/L, microg/L, kg/m³, ppm, and ppb instantly.
Type in any field and the others update automatically.
Type in any field — the others update instantly. Assumes aqueous (water-based) solutions for ppm/ppb.
All concentration conversions use g/L as the base unit. These conversions assume water-based (aqueous) solutions where 1 L of water weighs 1 kg.
Key conversions:
- 1 g/L = 1,000 mg/L
- 1 g/L = 1,000,000 µg/L
- 1 g/L = 1 kg/m³
- 1 g/L = 1,000 ppm (parts per million, in water)
- 1 g/L = 1,000,000 ppb (parts per billion, in water)
Note on ppm and ppb:
- For water: 1 mg/L = 1 ppm, 1 µg/L = 1 ppb
- This is because water density is approximately 1 kg/L
Common references:
- Drinking water chlorine: about 0.2–4 mg/L (0.2–4 ppm)
- Sea water salt: about 35 g/L (35,000 ppm)