18mm Plywood Weight Per Sheet

A 1220×2440mm (4'×8') sheet of 18mm plywood weighs 31.08 kg (68.5 lbs) with Acacia core. Weight varies by wood species: Styrax (26.79 kg) to Rubberwood (36.44 kg).

18mm (3/4") plywood weighs 68.5 lbs per 4'×8' sheet with Acacia core. With lighter Styrax core: 59.1 lbs. With denser Eucalyptus core: 80.3 lbs.

The main factors are wood species density (ranging from 500 to 680 kg/m³), moisture content, and glue type. Vietnamese plywood typically uses phenolic or melamine glue which adds minimal weight.

For 18mm hardwood-core plywood, 18 sheets of 4×8 ft weigh approximately 559 kg (1,232 lbs) — that's 31.08 kg (68.5 lbs) per sheet × 18. Softwood-core 4×8×3/4" sheets run lighter at about 49–55 lbs each, putting 18 sheets at roughly 882–990 lbs total. Always confirm species and density on the mill spec sheet before sizing forklifts or trailer loads.

A standard 1220×2440 mm (4×8 ft) sheet of 18mm hardwood-core plywood weighs approximately 31.08 kg (68.5 lbs). Eucalyptus and acacia cores fall in this range. EU-format 1250×2500 mm sheets at 18mm weigh approximately 32.6 kg (72 lbs). Softwood-core CDX 23/32" sheets are lighter, typically 22–25 kg (49–55 lbs).

A standard 40ft high-cube container holds approximately 380–420 sheets of 18mm 4×8 plywood by weight and volume — roughly 22 m³ at typical hardwood density. Total payload approaches 12–13 tonnes. For 1250×2500 mm EU-format panels, container capacity drops slightly to 360–400 sheets due to the larger footprint.

Sheet weight drives three project decisions: forklift and crane capacity at the loading bay, manual-handling safety thresholds (one person typically lifts up to 25 kg / 55 lbs), and floor live-load calculations when stacking panels on partially completed slabs. A pallet of 50 sheets at 31 kg each puts 1,554 kg over a 1.2×2.4 m footprint — well within capacity for most working slabs but worth confirming before you stack.

Use this simple formula: Weight = Density × Volume = Density × (Length × Width × Thickness). For 18mm hardwood-core plywood with a typical density of 580–620 kg/m³, a 1220×2440×18 mm sheet calculates to about 31–33 kg. Film-faced and phenolic-coated plywood add 1–2 kg per sheet for the resin film layers. Always verify against the manufacturer's spec sheet for freight planning.

Three variables move the number: wood species and density (eucalyptus is denser than pine), glue type and resin loading (phenolic and melamine add weight versus urea), and surface treatment (film-faced sheets add 1–2 kg from the resin coating). Moisture content also matters — kiln-dried panels at 8–12% MC weigh less than panels exposed to humid storage.