Convert Micrograms per cubic metre to Micrograms per litre
Convert Micrograms per cubic metre (µg/m³) to Micrograms per litre (µg/L) instantly and accurately.
Conversion Formula
µg/L = µg/m³ × 0.001
About Micrograms per cubic metre
The microgram per cubic metre (µg/m³) equals 10⁻⁹ kg/m³, the standard unit for ambient air quality reporting. WHO 2021 guidelines set annual mean limits for PM2.5 at 5 µg/m³ and PM10 at 15 µg/m³; NIOSH REL for nuisance dust is 10 000 µg/m³. Urban background air typically contains 10-50 µg/m³ of total suspended particles. 1 µg/m³ = 10⁻⁹ kg/m³ = 10⁻⁶ g/m³.
About Micrograms per litre
The microgram per litre (µg/L) equals 10⁻⁶ kg/m³, numerically equal to mg/m³, and the standard unit for trace-level water quality. EPA maximum contaminant level for arsenic is 10 µg/L; WHO guideline for lead in drinking water is 10 µg/L; pharmaceutical water-for-injection requires total organic carbon below 500 µg/L. 1 µg/L = 10⁻⁶ kg/m³ = 1 mg/m³ = 1 ppb (mass) in dilute aqueous solutions.
Quick Reference Table
| Micrograms per cubic metre (µg/m³) | Micrograms per litre (µg/L) |
|---|---|
| 1 µg/m³ | 0.001 µg/L |
| 2 µg/m³ | 0.002 µg/L |
| 5 µg/m³ | 0.005 µg/L |
| 10 µg/m³ | 0.01 µg/L |
| 25 µg/m³ | 0.025 µg/L |
| 50 µg/m³ | 0.05 µg/L |
| 100 µg/m³ | 0.1 µg/L |