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By Skylighter•February 14, 2018
Kraft Paper Weights and Thickness Comparison Chart
Original reference| Basis Weight (lbs/3000 sq ft) | Caliper Thickness (mils / in) | Thickness (mm) | Grammage (g/m²) | Density (g/cm³) |
|---|---|---|---|---|
| 30 lb | 2.5 mil (.0025") | 0.064 mm | 48.8 g/m² | 0.76 |
| 40 lb | 3.3 mil (.0033") | 0.084 mm | 65.1 g/m² | 0.78 |
| 50 lb | 4.2 mil (.0042") | 0.107 mm | 81.4 g/m² | 0.76 |
| 60 lb | 5.0 mil (.0050") | 0.127 mm | 97.6 g/m² | 0.77 |
| 70 lb | 5.8 mil (.0058") | 0.147 mm | 113.9 g/m² | 0.77 |
| 90 lb | 7.5 mil (.0075") | 0.191 mm | 146.5 g/m² | 0.77 |