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DOOR

Door Frame (Chaukhat) Wood Calculator in CFT

Calculate door frame wood in CFT from opening size and frame section, plus shutter size and typical hardware for each door.

ft

Outer size of the frame.

ft
in

e.g. 4 × 2½ inch, 5 × 2½ inch

in
/cft
/sq ft

Flush door or panel rate.

Assumptions used EDIT ▾
%

Frame length = 2 × height + width (+ width again for a sill), plus the joinery allowance. CFT = length (ft) × section width (in) × thickness (in) ÷ 144. The shutter fits inside the frame section; rebates, clearances and architraves are not included.

FRAME WOOD

1.30cft

18.7 running ft of 4" × 2.5" section

Shutter size15.6 sq ft each
28.0" × 80.0"
Hardware per door1 handle set, 1 lock, 2 tower bolts, 1 stopper (typical)
3 hinges
Frame wood1.30 cft

How it’s calculated

Frame length = 2 × height + width (+ width for a sill); CFT = length × section width × thickness ÷ 144

Example: A 7 × 3 ft door with a 4 × 2½ in frame: 17 ft × 4 × 2.5 ÷ 144 = 1.18 cft, plus joinery allowance.

Estimates for planning, based on the assumptions shown. They are not a guarantee of quantities or professional engineering advice; check critical work with a qualified professional.