Free Online Tool
MDF Weight Calculator
Calculate the weight of Medium Density Fiberboard panels instantly. Enter your dimensions and get accurate results for shipping, logistics, and project planning.
Results
Weight per Board
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MDF Density Comparison
Typical densities of different MDF types (kg/m³)
| MDF Type | Density (kg/m³) | Density (lb/ft³) | Typical Use |
|---|---|---|---|
| Ultralight MDF | 350–450 | 21.9–28.1 | Lightweight panels, crafts |
| Low-Density MDF | 450–600 | 28.1–37.5 | Interior panels, moldings |
| Standard MDF | 600–800 | 37.5–49.9 | Furniture, cabinetry, shelving |
| High-Density MDF (HDF) | 800–1000 | 49.9–62.4 | Flooring, high-stress applications |
Formula
Weight = Length × Width × Thickness × Density
Where dimensions are in feet and density is in lb/ft³.
Convert inches to feet by dividing by 12.
Convert inches to feet by dividing by 12.
For circular boards: Weight = π × (Diameter/2)² × Thickness × Density
How to Use This Calculator
- Select your unit system — Imperial (inches/lbs) for the US, or Metric (mm/kg).
- Choose the board shape — Rectangular or Circular.
- Enter dimensions — Length & Width (or Diameter for circular), plus Thickness. Use quick-select buttons for common thicknesses.
- Select MDF density type — Standard (700 kg/m³) is most common. Choose High-Density for flooring, Low-Density for lightweight panels, or enter a custom value.
- Set quantity — Enter the number of boards to get total weight.
- View results — Weight is calculated instantly in both metric and imperial units.
Example Calculation
A standard 4×8 ft MDF sheet, ¾″ (18mm) thick:
= 96 in × 48 in × 0.75 in × 43.7 lb/ft³
= (8 ft × 4 ft × 0.0625 ft) × 43.7 lb/ft³
= 2.0 ft³ × 43.7 lb/ft³
≈ 87.4 lb (39.6 kg)
= 96 in × 48 in × 0.75 in × 43.7 lb/ft³
= (8 ft × 4 ft × 0.0625 ft) × 43.7 lb/ft³
= 2.0 ft³ × 43.7 lb/ft³
≈ 87.4 lb (39.6 kg)
Tips
- Standard MDF sheets in the US are typically 4′×8′ (49″×97″ actual).
- MDF absorbs moisture — actual weight may vary by 5–10% depending on humidity.
- Always round up when estimating for shipping and structural calculations.
- High-density MDF (HDF) is nearly twice as heavy as ultralight MDF.
