Convert Nanograms per cubic metre to Milligrams per litre
Convert Nanograms per cubic metre (ng/m³) to Milligrams per litre (mg/L) instantly and accurately.
Conversion Formula
mg/L = ng/m³ × 1.000000000e-9
About Nanograms per cubic metre
The nanogram per cubic metre (ng/m³) equals 10⁻¹² kg/m³, the resolution floor of atmospheric radionuclide and trace-contaminant monitoring. Sr-90 fallout from nuclear testing is measured in ng/m³; EPA Method TO-14A quantifies volatile organic compounds at this level. HEPA-filtered clean-room air achieves particulate densities of 1-100 ng/m³. 1 ng/m³ = 10⁻¹² kg/m³ = 10⁻³ µg/m³.
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
| Nanograms per cubic metre (ng/m³) | Milligrams per litre (mg/L) |
|---|---|
| 1 ng/m³ | 1 × 10-9 mg/L |
| 2 ng/m³ | 2 × 10-9 mg/L |
| 5 ng/m³ | 5 × 10-9 mg/L |
| 10 ng/m³ | 1 × 10-8 mg/L |
| 25 ng/m³ | 2.5 × 10-8 mg/L |
| 50 ng/m³ | 5 × 10-8 mg/L |
| 100 ng/m³ | 1 × 10-7 mg/L |