Timber CFT Calculator
Work out the cubic feet (cft) of wood from each piece's length, width and thickness, and the cost at your timber merchant's price per cft.
Timber merchants in Pakistan and India usually measure length in feet and the other sides in inches.
Leave at 0 to skip the cost.
Total volume
10 cubic feet (cft)
- In cubic metres
- 0.2832 m³
- One piece
- 0.833 cft
12 pieces of 10 ft × 6″ × 2″ come to 10 cft (0.283 m³).
How it's worked out
- One piece
10 × 6 × 2 ÷ 1440.833 cft - All pieces
0.833 × 1210 cft
- Dividing by 144 turns square inches into square feet: a piece 1 ft long, 12″ wide and 12″ thick is exactly 1 cft.
- Allow some extra, often 5 to 10%, for offcuts and defects.
How it is worked out
With feet and inches, one piece is length (ft) × width (in) × thickness (in) ÷ 144. With metric sizes, the calculator works in cubic metres first and multiplies by 35.315 for cft. The total is one piece times the number of pieces.
Buying timber
Check whether the price is for the size as sawn or after planing, which takes a little off each side, and allow some extra for offcuts and defects.
Questions people ask
How do I calculate the cft of wood?
Multiply the length in feet by the width and thickness in inches, then divide by 144. A 10 ft piece, 6 inches by 2 inches, is 10 × 6 × 2 ÷ 144 = 0.833 cft.
How many cft are 12 pieces of 10 ft × 6″ × 2″?
10 cft. Each piece is 0.833 cft.
Why divide by 144?
The width and thickness are in inches, and 144 square inches make one square foot. Dividing by 144 turns length × width × thickness into cubic feet.
How many cft are in a cubic metre?
About 35.31 cft.
About this calculator
Formula and rules last checked 10 November 2026Written and tested by the CalculatorDex teamReport a problem