About this calculator
Timber merchants price by the cubic metre or the linear metre. This turns piece counts into both, with cost.
How it’s calculated
Cubic metres = thickness × width × length (all in metres) × pieces.
Worked example
With these inputs:
- Thickness
- 47 mm
- Width
- 150 mm
- Length
- 3.6 m
- Number of pieces
- 20
- Price per m³
- £650
the result is:
- Timber volume
- 0.5076 m³
- Total linear length
- 72 lin m
- Board feet
- 215.1 BF
- Approx. weight (softwood, dry)
- 279 kg
- Cost
- £329.94
Tips from the trade
- Sawn sizes shrink when planed: 47 × 100 sawn is about 44 × 94 PAR.
- Add 15–25% for defects when buying rough-sawn hardwood.
Results are estimates for planning and pricing. Check quantities against your drawings, the manufacturer’s data and the Building Regulations before ordering.