Door Casing Calculator
Estimate door-casing length, stock pieces, joints and material cost for identical rectangular door openings.
Default project preview
37 stock pieces
Base casing length
261.4 ft
Head pieces
16
Leg pieces
32
Opening perimeter
16.3 ft
Calculator
Build the material order
Your order will appear here
Enter the project details and calculate a rounded material estimate.
Methodology
Transparent calculation
BuildMeter converts every input to a consistent internal unit, applies the selected allowance, and rounds products up to whole purchasable units.
Casing length = (two opening heights + opening width) × doors × faces. Add the cut allowance, then divide by stock length and round up.
FAQ
Door Casing Calculator questions
Why count only three sides?+
Typical door casing covers the two jambs and head, not the threshold.
Should casing be measured at the opening edge?+
Measure along the intended reveal line because casing outside dimensions exceed the door opening.
Can eight-foot stock cover a standard door leg?+
Often, but tall openings and large reveals may require longer stock. Confirm the finished cut length.