Friday, October 9, 2026
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Plywood Conversion Formula Calculator

Convert between square meter, square feet, CBM, CFT and NA (notional area) for any plywood thickness. Based on the Plywood Guru conversion formulas: 1 CBM = 250 NA, 1 CFT = 7.08 NA.

Read the full explanation in Plywood Conversion Formula.

Result

Step-by-step calculation

    Formula

    1 CBM = 250 NA (at 4 mm base); 1 CFT = 7.08 NA NA × 0.0040 = CBM; CBM = Sq.m × Thickness (mm) ÷ 1000; Sq.m = CBM × 1000 ÷ Thickness (mm) CFT = Sq.m × Thickness (mm) ÷ 28.317; CBM = CFT ÷ 35.315 Sq ft = Sq.m × 10.764; Sq.m = Sq ft ÷ 10.764

    Worked example

    Calculated with the default values shown in the form.

      Technical notes

      • NA (notional area) is plywood expressed as square meters of 4 mm thickness, so 1 CBM = 250 NA. If your plant or buyer uses another base thickness, change the base field.
      • Thickness is needed to move between area (sq.m, sq ft) and volume (CBM, CFT).
      • Examples from the article: 50000 NA × 0.0040 = 200 CBM; 12 CBM at 1.8 mm = 6666.67 sq.m; 6666.66 sq.m × 10.764 = 71,760 sq ft.

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