Category
Wood & Trim
From board feet to rafter geometry and panel layouts, these tools handle the measuring math for woodworking and trim — with explicit assumptions about what is and is not included.
Calculators in this category
Board Foot Calculator
Convert lumber dimensions into board feet and cost, per row and in total.
Open calculator →Roof Pitch Calculator
Convert between rise/run, X:12 pitch, roof angle in degrees and percent grade.
Open calculator →Deck Board Calculator
Estimate the number of deck boards from deck size, board width, gap and stock length.
Open calculator →Rafter Length Calculator
Estimate common-rafter slope length from span, ridge, overhang and pitch.
Open calculator →Baseboard Calculator
Estimate baseboard lengths from room perimeter, door openings and stock length.
Open calculator →Deck Calculator
Estimate deck boards and joist support-line counts from deck size and board layout.
Open calculator →Fence Post Calculator
Lay out fence posts at even spacing along an open run or a closed perimeter.
Open calculator →Lumber Calculator
Convert finished piece counts into stock lumber to buy.
Open calculator →Shingle Calculator
Estimate shingle bundles from sloped roof area or projected roof planes and pitch.
Open calculator →Wainscoting Calculator
Lay out equal wainscoting panel openings across a wall, with stile positions.
Open calculator →Fence Calculator
Count bays, posts, rails and vertical boards for one ungated run or closed loop.
Open calculator →Stair Calculator
Compare a straight-flight riser count, actual rise and horizontal run.
Open calculator →Choosing between these tools
Choose the tool for the quantity you need, then use its matching measurement mode. Check the product basis before turning area or volume into a purchase order.
Compare lumber and cuts
Use board feet for volume or billing comparisons. Use Lumber for repeated equal-length cuts with saw kerf. Neither calculator establishes a safe structural span.
Board Foot Calculator · Lumber Calculator · Baseboard Calculator
Plan deck material quantities
Choose the board direction, actual width, gap and stock length. Count joist support lines from the specified plan spacing. Obtain fastener quantities from the manufacturer’s schedule and actual support and joint layout; footing, connection and span design stay separate.
Deck Calculator · Deck Board Calculator · Lumber Calculator
Check roof geometry
Find pitch from rise and horizontal run, then calculate geometric rafter length or slope area. Use the shingle bundle label and avoid applying slope twice.
Roof Pitch Calculator · Rafter Length Calculator · Shingle Calculator
Measure a fence or straight stair
Choose an explicit run topology or riser count. Check the geometric model and use a separate design for footings, loads, headroom, gates and local requirements.