Plywood CBM per Thickness: Complete Lookup Table

Every plywood importer hits the same wall: supplier quotes FOB price in USD/sheet, freight forwarder quotes in USD/CBM, and the bank requires total container weight for the letter of credit. Three numbers, three different units — and you need to reconcile all of them before signing the purchase order.

This article gives you a complete CBM-per-sheet lookup table for every standard plywood thickness from 3mm to 30mm, for both 1220×2440mm (4×8 ft) and 1250×2500mm (metric EU) sheet sizes. Use this lookup reference to eliminate rounding errors and approximations.

Bookmark this page. The tables below eliminate the back-and-forth between you and your supplier every time a new order comes in.

📐 The CBM Formula (How It Works)

CBM per sheet is the volume one plywood sheet occupies in three dimensions: length × width × thickness.

CBM/sheet = thickness (m) × length (m) × width (m)

For 18mm plywood on a 1220×2440mm sheet:

0.018 × 1.22 × 2.44 = 0.053582 CBM

Invert that to get sheets per CBM:

Sheets/CBM = 1 ÷ CBM/sheet = 1 ÷ 0.053582 = 18.66 sheets

Two inputs change this calculation: thickness and sheet size. Core species, glue type, and face veneer have zero effect on CBM — they only affect weight.

💡 Tip: CBM determines how much volume you are buying. Density (kg/CBM) determines whether that volume hits the 40HC payload limit of 28.5 MT. Both matter for your total landed cost.

📊 CBM per Sheet — 1220×2440mm (4×8 ft)

This is the most common sheet size for Vietnamese plywood exports. It ships to India, Korea, the Middle East, and most Southeast Asian markets.

Sheets per pallet = floor(1000 ÷ thickness_mm). Pallet stack height: 1000mm (forklift-safe limit, HCPLY production standard, 2026).

“The sheets-per-pallet figure is critical for ordering decisions,” explains Lucy, International Sales Manager at HCPLY. “When buyers calculate CBM from our price list, they often forget that odd thicknesses like 16mm and 21mm naturally fit full pallets — this avoids partial pallets that increase packing cost per CBM.”

📊 CBM per Sheet — 1250×2500mm (Metric EU Size)

European buyers — particularly in Germany, Poland, Spain, and France — typically specify 1250×2500mm. This sheet is 5.1% larger in area than 4×8 ft. The CBM difference adds up quickly across a full container.

Sheets per pallet: same stack height (1000mm), same formula. CBM per sheet is 5.1% higher than 1220×2440 at every thickness.

⚠️ Important: Never mix 1220×2440 and 1250×2500 CBM figures in the same container calculation. A single row error on a 500-sheet order translates to 2–3 CBM discrepancy — enough to push weight over the payload limit or trigger a short-shipped container at the destination port.

📦 Full Container CBM by Core Species — 40HC Standard

CBM per sheet tells you the volume of one panel. Container CBM depends on how many pallets fit in the 40HC box — and that depends on the core species, because denser cores hit the 28.5 MT payload limit before filling the container.

The three Vietnamese core species (acacia, eucalyptus, styrax) have different packing densities:

Data: HCPLY production packing records, 2026. Sheet size 1220×2440mm. Note: eucalyptus uses 970mm stack height, not 1000mm.

The table below shows total container CBM by thickness and core species:

The narrow variation in CBM per column (52–54 for styrax) is a mathematical property: as thickness increases, sheets per pallet decreases proportionally, keeping total volume nearly constant. What changes is the weight — and that is the real constraint for dense cores.

⚠️ Note: Eucalyptus core at full 15-pallet loading approaches the 28.5 MT payload limit. For orders specifying eucalyptus core in any thickness, HCPLY performs a weight verification before confirming the packing plan. If your eucalyptus order also includes heavy accessories (fasteners, profiles), flag this at quotation stage to avoid a last-minute pallet reduction.

🔧 How to Use These Tables in Practice

Scenario 1: You have a sheet count, need container CBM

1. Find your thickness row in the relevant sheet-size table
2. Multiply CBM/sheet × total sheets
3. Cross-check against the container table to confirm pallet count matches your core species

Example: 880 sheets of 12mm, 1220×2440, acacia core

• CBM/sheet = 0.035722
• Total CBM = 880 × 0.035722 = 31.44 CBM
• Container check: acacia 16 pallets × 83 sheets = 1,328 sheets. 880 sheets = 10.6 pallets → partial container (LCL or pad with a second spec)

Scenario 2: You have a CBM budget, need sheet count

1. Find your Sheets/CBM value from the table
2. Multiply by your CBM budget
3. Round down to the nearest full pallet to avoid split pallets

Example: 40 CBM budget, 18mm, 1220×2440

• Sheets/CBM = 18.66
• Max sheets = 40 × 18.66 = 746 sheets
• Sheets per pallet = 55, so 746 ÷ 55 = 13.6 pallets → round to 13 pallets = 715 sheets

Scenario 3: Checking if your container is weight-safe

1. Calculate total CBM from Scenario 1 or 2
2. Multiply by core density (styrax 500, acacia 580, eucalyptus 650 kg/CBM)
3. Result must be under 28,500 kg (28.5 MT)

📋 CBM vs. Weight: Why Both Matter for Your Landed Cost

Freight forwarders quote by volume (CBM) for sea freight, but customs and the vessel operator cap by weight. An order that looks fine on CBM can fail the weight check — or vice versa.

The relationship between CBM and weight is controlled by core density:

Source: HCPLY production packing records, 2026.

This is why styrax core commands a premium in some markets despite being the cheapest Vietnamese core species by raw material cost: you get more sheets, more CBM, and less weight risk per container. For furniture buyers ordering 18mm at high volume, the difference between styrax and eucalyptus can be 5–6 CBM per container — 10–12% more product per shipment (HCPLY production data, 2026).

For a detailed explanation of why core species drives packing efficiency, see styrax core plywood container loading.

📦 Mixed-Spec Containers: Calculating Combined CBM

Most buyers order multiple specs in one container — different thicknesses, sometimes different core species. The approach is additive:

Total CBM = (Spec A sheets × CBM/sheet_A) + (Spec B sheets × CBM/sheet_B) + ...
Total Weight = (CBM_A × Density_A) + (CBM_B × Density_B) + ...

Both totals must stay inside the 40HC limits: under 53 CBM (styrax) or your pallet-count cap, and under 28,500 kg.

Example: 400 sheets 12mm acacia + 300 sheets 18mm styrax (1220×2440)

• 12mm acacia: 400 × 0.035722 = 14.29 CBM × 580 = 8,288 kg
• 18mm styrax: 300 × 0.053582 = 16.07 CBM × 500 = 8,038 kg
• Combined: 30.36 CBM, 16,326 kg → ✅ Well within limits

When mixing dense and light cores in one container, HCPLY recalculates pallet count and weight before confirming. Always share your full spec list — not just the primary item — at quotation stage to avoid last-minute surprises at the factory.

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📊 Quick Reference: Key Thicknesses at a Glance

For the thicknesses used most in B2B export orders:

Sheets/40HC styrax = sheets/pallet × 18 pallets. 1220×2440mm.

For the complete CBM formula and step-by-step calculation walkthrough, see plywood CBM calculation formula.

🔗 Related Calculations

CBM per sheet is one part of a three-stage calculation every plywood importer needs to complete before confirming an order:

1. CBM per sheet (this article) → volume per panel
2. Container packing plan → total sheets, pallets, CBM, weight per 40HC → see plywood container packing calculation 40HC
3. Freight cost impact → how packing efficiency affects your USD/sheet landed cost → see plywood shipping cost per CBM from Vietnam

For thickness specifications, dimensional tolerances (±0.3mm standard), and the range of standard sizes HCPLY produces, see plywood sizes and thickness guide.

✅ Conclusion

The tables in this article give you factory-level CBM values for every standard Vietnamese plywood thickness. Key takeaways:

• CBM/sheet depends only on thickness and sheet size — core, glue, and face veneer do not affect volume
• Weight depends on core density — styrax (~500 kg/CBM), acacia (~580), eucalyptus (~650)
• Styrax maximizes sheets per container (18 pallets vs. 15 for eucalyptus) because eucalyptus also uses a reduced 970mm stack height for 1220×2440mm sheets
• 1250×2500mm is 5.1% larger than 1220×2440 at every thickness — always confirm sheet size before calculating order quantities
• Mixed-spec containers require line-by-line CBM addition plus a combined weight check

For all calculations in this article, HCPLY uses factory-confirmed pallet heights (styrax/acacia: 1000mm; eucalyptus 1220×2440mm: 970mm), standard 40HC dimensions, and actual production density values measured on-site (HCPLY production data, 2026). These are the same numbers our factory team uses when building your packing list.

Ready to confirm a container? Share your spec list — thickness, core, sheet size, quantity — and we will send back a complete CBM breakdown and container plan within 24 hours.

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