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Calculate OSB sheet weight online using length, width, thickness, and density. Estimate OSB board weight per sheet, m², and total sheets.
| Formula | Purpose | Notes |
|---|---|---|
| Weight = L(m) × W(m) × T(m) × Density | Single-sheet weight | Density in kg/m³ |
| Weight/m² = Density × Thickness(mm) ÷ 1000 | Quick per-area estimate | e.g. 650 kg/m³ × 12mm ÷ 1000 = 7.8 kg/m² |
| Total = Single Sheet Weight × Sheets | Multiple identical sheets | Excludes pallets/packaging |
An OSB Weight Calculator helps you quickly estimate the weight of an oriented strand board sheet. OSB is widely used for wall sheathing, roof sheathing, floors, and structural panels. Knowing the board weight helps with transport, handling, framing, and material planning.
The weight of an OSB board depends mainly on its length, width, thickness, and density. Our online OSB Weight Calculator makes this calculation simple. You can enter common dimensions such as mm, cm, meters, inches, or feet and select the OSB density that matches your board.
The basic OSB weight formula is:
OSB Weight = Length × Width × Thickness × Density
Use length, width, and thickness in meters and density in kg/m³.
The calculator first finds the board volume:
Volume = Length × Width × Thickness
Then:
Weight of 1 OSB Sheet = Volume × Density
For weight per square meter:
OSB Weight per m² = Density × Thickness(mm) ÷ 1000
For several sheets:
Total OSB Weight = Weight of 1 Sheet × Number of Sheets
The calculator also converts the final result between kilograms, pounds, and metric tonnes.
Suppose you have an OSB sheet measuring 2440 mm × 1220 mm × 18 mm with a density of 650 kg/m³.
First convert the dimensions to meters:
Length = 2440 ÷ 1000 = 2.44 m
Width = 1220 ÷ 1000 = 1.22 m
Thickness = 18 ÷ 1000 = 0.018 m
Now calculate the volume:
Volume = 2.44 × 1.22 × 0.018
Volume = 0.0535824 m³
Now calculate the sheet weight:
Weight = 0.0535824 × 650
Weight = 34.83 kg
So, one OSB board weighs approximately 34.83 kg.
The weight per square meter is:
Weight/m² = 650 × 18 ÷ 1000
Weight/m² = 11.7 kg/m²
If you have 10 identical sheets:
Total Weight = 34.83 × 10
Total Weight = 348.3 kg
This same method can be used to estimate the weight of 7/16 OSB, weight of 1/2 OSB, weight of 5/8 OSB, or weight of 3/4 OSB, provided the correct thickness and density are used.
The OSB Weight Calculator gives a fast way to estimate the weight of an OSB board or a complete stack of sheets. The key factors are panel dimensions and density. Unlike a simple OSB weight chart, this calculation can work with custom dimensions and density values.
For the most accurate result, use the actual density or product data supplied by the OSB manufacturer. This is especially useful when calculating OSB board weight for roofing, wall sheathing, flooring, transportation, or material estimates.
The weight depends on the sheet size, thickness, and density. A standard 2440 × 1220 × 18 mm sheet at 650 kg/m³ weighs about 34.83 kg.
The weight of 7/16 OSB depends on its sheet dimensions and density. Use the exact thickness, board size, and density in the calculator for an accurate estimate.
A 1/2-inch OSB sheet is heavier than a thinner 7/16-inch sheet when the length, width, and density are the same. The calculator determines the exact estimated weight from these values.
The weight of 3/4 OSB depends on its dimensions and density. Because 3/4-inch OSB is thicker, it normally weighs more per square foot than thinner OSB panels.
Yes. The calculator can estimate the board weight for OSB wall sheathing, roof sheathing, floors, and other applications. It calculates material weight rather than structural load capacity.
Yes. Higher-density OSB produces a higher calculated weight for the same dimensions and thickness.