Convert Micrograms per litre to Milligrams per litre
Convert Micrograms per litre (µg/L) to Milligrams per litre (mg/L) instantly and accurately.
Conversion Formula
mg/L = µg/L × 0.001
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.
About Milligrams per litre
The milligram per litre (mg/L) equals 10⁻³ kg/m³ and is the dominant unit in water chemistry and environmental analysis. Numerically equivalent to ppm (mass) for dilute aqueous solutions; WHO drinking-water guideline for nitrate is 50 mg/L, for fluoride 1.5 mg/L. Biological oxygen demand (BOD), chemical oxygen demand (COD), and total suspended solids (TSS) are all reported in mg/L. 1 mg/L = 10⁻³ kg/m³ = 1 g/m³.
Quick Reference Table
| Micrograms per litre (µg/L) | Milligrams per litre (mg/L) |
|---|---|
| 1 µg/L | 0.001 mg/L |
| 2 µg/L | 0.002 mg/L |
| 5 µg/L | 0.005 mg/L |
| 10 µg/L | 0.01 mg/L |
| 25 µg/L | 0.025 mg/L |
| 50 µg/L | 0.05 mg/L |
| 100 µg/L | 0.1 mg/L |