Board volume calculator
Volume of timber, of a single board, and boards per cubic metre.
Fill in the fields and the result will appear here automatically.
Converts board length and section into cubic metres — the unit timber is sold in. Length is measured in metres and the section in millimetres, and that conversion is exactly where mental arithmetic goes wrong: multiplying millimetres as if they were metres is out by a factor of a million while still looking like a plausible figure. Here it is done explicitly. A separate line gives how many such boards fit into a cubic metre, which is usually the number checked at the yard.
How it works
Formula and logic
One rectangular board has v = L·b·t/1,000,000: L in m, b and t in mm. Total volume = n·v; theoretical boards per cubic metre = 1/v. n is a positive safe integer and dimensions are positive and finite. Price is in RUB/m³; zero or omitted price hides cost, while positive price gives volume·price.
Example
A 6 m × 150 × 25 mm board takes 0.0225 m³; fifty of them make 1.125 m³, and a cubic metre holds 44.44 of them.
Fields and units
- Board length — m
- Board width — mm
- Board thickness — mm
- Number of boards — unitless
- Price per cubic metre — RUB/m³
How to use
- — Enter the board length in metres and the width and thickness in millimetres.
- — Give the number of boards.
- — Add a price per cubic metre if you need the cost.
Method and limitations
- Calculation method
- Formula and logic
- Limitation
- Volume follows the entered dimensions. Measure actual dimensions for actual volume or use agreed nominal dimensions for contractual volume; no automatic correction is applied.
FAQ
Why are width and thickness in millimetres?
Because that is how timber sections are marked: 150 × 25. The conversion to metres happens inside the calculation, so there is no need to type 0.15 and 0.025 and no chance to slip a decimal.
How many boards are in a cubic metre?
It is the theoretical ratio 1/v. For 6 m × 150 × 25 mm it is 44.44; 44 whole boards occupy 0.99 m³ and 45 occupy 1.0125 m³. This fractional ratio is not rounded into a purchase order.
Is wane or shrinkage included?
No. Volume follows the entered dimensions. Measure actual dimensions for actual volume or use agreed nominal dimensions for contractual volume; no automatic correction is applied.
Does it work for beams?
Yes, for any rectangular section: length, width and thickness are entered the same way.