About this calculator
Timber is priced by the metre of length or by the cubic 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
- R0
the result is:
- Timber volume
- 0.5076 m³
- Total linear length
- 72 lin m
- Approx. weight (softwood, dry)
- 279 kg
- Cost
- R0.00
Tips from the trade
- Planed timber is thinner than its sawn size: SANS 10400-L takes 38 mm members as 36 mm thick when planed.
- 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 SANS 10400 (the National Building Regulations) and your local municipality before ordering.