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Calculate Wood Volume, Board Feet & Material Costs
Professional Timber Quantity Estimator for Construction
Timber and wood products are fundamental construction materials used in framing, flooring, roofing, cladding, and joinery. Our timber calculator helps estimate wood quantities, volumes, board feet, and costs for construction projects based on British Standards and industry sizing conventions for 2026.
Accurate timber calculation prevents material waste, controls project costs, and ensures sufficient supply for completion. Understanding timber measurements including cubic meters, board feet, and linear meters is essential for professional estimating and compliance with UK Building Regulations.
Calculate wood quantities and costs for your project
Timber sizing and grading in the UK follows BS EN 14081 for structural timber and TRADA (Timber Research and Development Association) guidelines. Our timber calculator uses these standards to provide accurate material estimates for construction projects in 2026.
| Nominal Size | Actual Size (mm) | Common Uses | Price per m (£) |
|---|---|---|---|
| 2x2 (50x50mm) | 47x47mm | Battens, light framing, fencing | £2.50 - £4.00 |
| 2x3 (50x75mm) | 47x72mm | Wall plates, noggins, light joists | £3.50 - £5.50 |
| 2x4 (50x100mm) | 47x100mm | Studs, joists, rafters (most common) | £4.50 - £7.00 |
| 2x6 (50x150mm) | 47x150mm | Floor joists, headers, rafters | £7.00 - £11.00 |
| 2x8 (50x200mm) | 47x200mm | Floor joists, beams, headers | £9.50 - £15.00 |
| 2x10 (50x250mm) | 47x250mm | Large joists, beams, long spans | £12.00 - £19.00 |
| 4x2 (100x50mm) | 100x47mm | Floor joists, wall plates, headers | £5.00 - £8.00 |
| 6x2 (150x50mm) | 150x47mm | Joists, purlins, structural beams | £8.00 - £13.00 |
Different timber types and strength grades serve specific construction purposes. Our timber calculator accounts for various wood species and grading systems following UK timber standards for structural and non-structural applications.
Strength Class: General purpose structural
Bending Strength: 16 N/mm²
Species: Spruce, Pine, Fir (whitewood/redwood)
Applications: Studs, joists up to 4m span, general framing
Cost: £350-500 per m³
Availability: Readily available at all merchants
Strength Class: Higher strength structural
Bending Strength: 24 N/mm²
Species: Selected softwood, fewer defects
Applications: Long span joists, structural beams, critical loads
Cost: £450-650 per m³
Availability: Standard at timber merchants
Treatment: Tanalised/preservative impregnation
Protection: Rot, fungal decay, insect attack
Lifespan: 15+ years external exposure
Applications: Outdoor decking, fencing, ground contact
Cost: £500-750 per m³
Color: Green/brown tint from treatment
Density: 720 kg/m³ (high)
Durability: Excellent natural durability
Species: European Oak, American White Oak
Applications: Structural beams, joinery, flooring, furniture
Cost: £1,200-2,500 per m³
Finishing: Beautiful grain, excellent for staining
Material: Laminated Veneer Lumber
Strength: Superior to solid timber
Stability: Minimal warping, consistent properties
Applications: Long span beams, headers, structural frames
Cost: £800-1,400 per m³
Sizes: Custom lengths up to 20m available
Material: Glued Laminated Timber
Strength: High strength-to-weight ratio
Versatility: Can be curved or shaped
Applications: Long span roofs, exposed beams, commercial
Cost: £900-1,800 per m³
Environmental: Sustainable engineered timber
Board feet is a traditional timber measurement still used in the UK and internationally for hardwood and some specialty timber. One board foot equals a piece measuring 12" × 12" × 1" (305mm × 305mm × 25mm). The timber calculator converts between metric and imperial measurements for accurate estimating.
📐 Board Feet Formula:
Standard UK: Primary measurement for bulk timber
Calculation: Length (m) × Width (m) × Thickness (m)
Example: 4.8m × 0.1m × 0.05m = 0.024 m³
Usage: Softwood structural timber pricing
Traditional: Hardwood and specialty timber
Calculation: T(in) × W(in) × L(ft) ÷ 12
Example: 2" × 4" × 8ft = 5.33 BF
Usage: Oak, walnut, exotic hardwoods
Simple: Length measurement only
Calculation: Total length of pieces
Example: 20 pieces × 4.8m = 96 linear meters
Usage: Fencing, decking, trim pricing
Sheet Goods: Plywood, OSB, MDF
Calculation: Length (m) × Width (m)
Example: 2.44m × 1.22m = 2.977 m²
Usage: Flooring, sheathing, panels
Timber prices fluctuate based on species, grade, treatment, and market conditions. Current UK prices reflect supply chain stability and sustainable forestry practices. Prices shown are estimates for merchant supply including Travis Perkins, Jewson, and Wickes as of 2026.
| Material Type | Grade/Specification | Price per m³ (£) | Price per m (2x4) (£) |
|---|---|---|---|
| C16 Softwood | Regularized construction grade | £350 - £500 | £4.50 - £6.00 |
| C24 Softwood | Structural grade | £450 - £650 | £5.50 - £8.00 |
| Treated Softwood | Tanalised pressure treated | £500 - £750 | £6.00 - £9.00 |
| European Oak | Air dried hardwood | £1,200 - £2,000 | £18.00 - £25.00 |
| American Oak | Kiln dried hardwood | £1,500 - £2,500 | £20.00 - £30.00 |
| LVL Beam | Engineered structural | £800 - £1,400 | £12.00 - £18.00 |
| Glulam | Laminated structural beam | £900 - £1,800 | £15.00 - £25.00 |
| Plywood (Structural) | 18mm sheathing grade | £450 - £650 per m³ | £25 - £35 per sheet |
| OSB | 11mm OSB/3 structural | £300 - £450 per m³ | £12 - £18 per sheet |
Sheet materials like plywood, OSB, and MDF are essential for flooring, sheathing, and subflooring. Our timber calculator estimates sheet quantities based on coverage area and standard sheet dimensions following BS EN 636 plywood standards.
Standard Size: 2440×1220mm (8×4ft)
Coverage: 2.977 m² per sheet
Thicknesses: 9mm, 12mm, 15mm, 18mm, 25mm
Applications: Flooring, roof sheathing, structural panels
Grade: CE2+ structural, moisture resistant
Cost: £25-45 per sheet (18mm)
Standard Size: 2400×1200mm
Coverage: 2.88 m² per sheet
Thicknesses: 9mm, 11mm, 15mm, 18mm
Applications: Roof decking, wall sheathing, flooring underlay
Grade: OSB/3 load-bearing humid conditions
Cost: £12-22 per sheet (11mm)
Standard Size: 2440×1220mm
Coverage: 2.977 m² per sheet
Thicknesses: 6mm, 9mm, 12mm, 18mm, 25mm
Applications: Interior joinery, painted finishes, furniture
Note: Not structural - interior use only
Cost: £15-35 per sheet (18mm)
Standard Size: 2400×600mm T&G
Coverage: 1.44 m² per sheet
Thicknesses: 18mm, 22mm (standard flooring)
Applications: Flooring substrate, moisture resistant
Grade: P5 moisture resistant chipboard
Cost: £12-20 per sheet (22mm)
Standard Size: 2440×1220mm
Coverage: 2.977 m² per sheet
Thicknesses: 6mm to 25mm
Applications: Wet areas, external use, boats
Grade: BS 1088 marine grade WBP glue
Cost: £45-85 per sheet (18mm)
Standard Size: 2440×1220mm
Coverage: 2.977 m² per sheet
Thicknesses: 6mm, 9mm, 12mm, 18mm
Applications: Visible surfaces, furniture, cabinetry
Finish: Birch, oak, walnut veneers
Cost: £35-75 per sheet (12mm birch)
⚠️ Timber Storage and Handling:
Responsible timber sourcing is essential for environmental sustainability and legal compliance. UK regulations require timber from legal and sustainable sources certified by FSC (Forest Stewardship Council) or PEFC (Programme for the Endorsement of Forest Certification).
✅ Sustainable Timber Certification: