Convert Milligrams per cubic metre to Tonnes per cubic metre
Convert Milligrams per cubic metre (mg/m³) to Tonnes per cubic metre (t/m³) instantly and accurately.
Conversion Formula
t/m³ = mg/m³ × 1.000000000e-9
About Milligrams per cubic metre
The milligram per cubic metre (mg/m³) equals 10⁻⁶ kg/m³, the reference unit for industrial occupational exposure limits (OELs). NIOSH REL for respirable crystalline silica is 0.05 mg/m³; OSHA PEL for Portland cement 15 mg/m³; ACGIH TLV for calcium carbonate dust 10 mg/m³. Numerically equal to µg/L, bridging airborne and aqueous analysis. 1 mg/m³ = 10⁻⁶ kg/m³ = 1 µg/L.
About Tonnes per cubic metre
The tonne per cubic metre (t/m³) equals 1000 kg/m³, coincident with g/cm³ and kg/L. Geotechnical engineering specifies bulk unit weights in t/m³: saturated clay 1.8-2.2 t/m³, dry sand 1.4-1.7 t/m³, reinforced concrete 2.4-2.5 t/m³. Bulk-material handling uses t/m³ for conveyor and silo capacity calculations, yielding mass in tonnes directly from volume in m³. 1 t/m³ = 1000 kg/m³ = 1 g/cm³.
Quick Reference Table
| Milligrams per cubic metre (mg/m³) | Tonnes per cubic metre (t/m³) |
|---|---|
| 1 mg/m³ | 1 × 10-9 t/m³ |
| 2 mg/m³ | 2 × 10-9 t/m³ |
| 5 mg/m³ | 5 × 10-9 t/m³ |
| 10 mg/m³ | 1 × 10-8 t/m³ |
| 25 mg/m³ | 2.5 × 10-8 t/m³ |
| 50 mg/m³ | 5 × 10-8 t/m³ |
| 100 mg/m³ | 1 × 10-7 t/m³ |