SHEET MATERIAL
Birch plywood: weight per sheet, thicknesses and sizes
Plywood made entirely of birch veneers. The Handbook of Finnish Plywood gives a mean design density of 680 kg/m³ at 65% relative humidity, and 620 kg/m³ for combi plywood, with two birch face veneers on each side and alternating conifer and birch veneers in the core.
Key figures
- Density
- 680 kg/m³Handbook of Finnish Plywood, mean at 65% relative humidity
- Combi plywood (birch faces, alternating birch/conifer core)
- 620 kg/m³Handbook of Finnish Plywood, mean at 65% relative humidity
- Thicknesses in the table
- 4 · 6.5 · 9 · 12 · 15 · 18 · 21 · 24 · 27 · 30 mmAs published by Finnish Forest Industries Federation
Weight per sheet
Volume × the mean density of Birch plywood, the same calculation as the weight calculator. Actual panels vary around this mean.
| Thickness | 2,440 × 1,220 mm | 2,500 × 1,250 mm | 3,000 × 1,500 mm | 3,050 × 1,525 mm |
|---|---|---|---|---|
| 4 mm | 8.1 kg | 8.5 kg | 12.2 kg | 12.7 kg |
| 6.5 mm | 13.2 kg | 13.8 kg | 19.9 kg | 20.6 kg |
| 9 mm | 18.2 kg | 19.1 kg | 27.5 kg | 28.5 kg |
| 12 mm | 24.3 kg | 25.5 kg | 36.7 kg | 38 kg |
| 15 mm | 30.4 kg | 31.9 kg | 45.9 kg | 47.4 kg |
| 18 mm | 36.4 kg | 38.3 kg | 55.1 kg | 56.9 kg |
| 21 mm | 42.5 kg | 44.6 kg | 64.3 kg | 66.4 kg |
| 24 mm | 48.6 kg | 51 kg | 73.4 kg | 75.9 kg |
| 27 mm | 54.7 kg | 57.4 kg | 82.6 kg | 85.4 kg |
| 30 mm | 60.7 kg | 63.8 kg | 91.8 kg | 94.9 kg |
The sizes in the table are formats published by Finnish Forest Industries Federation. Sheet sizes and thicknesses vary by market and manufacturer: confirm what your supplier stocks.
Cutting, edges and fixing
For Finnish plywood the face grain generally runs along the shorter side of standard panels, the first dimension stated, so check the grain before locking it in the sheet-cut calculator. In the handbook’s table an 18 mm birch panel has 13 plies and weighs about 12.2 kg/m², which matches 680 kg/m³.
Calculate with this material
Plywood or MDF? Choosing a sheet material · Screws and pilot holes