Measure Twice. Cut Once.
Precision calculators for woodworking, carpentry, and lumber estimation.
Lumber Yard
PurchasingBoard Foot Calculator
Calculate board feet and total cost for hardwood lumber. Supports standard thickness (4/4, 8/4) and random widths.
Launch Tool →Lumber Optimizer
Cut list optimization. Figure out exactly how many boards to buy and how to cut them to minimize waste.
Launch Tool →Visual Cut Planner
Drag and drop parts onto a virtual 4x8 sheet. Visualize your cuts before you buy.
Launch Planner →The Workshop
FabricationCutting Board Designer
Visual pattern maker. Design end-grain or edge-grain boards and generate a cut list automatically.
Launch Tool →Cabinet Door Calculator
Calculate rail and stile lengths for shaker doors based on opening size and overlay.
Launch Tool →Drawer Box Calculator
Generate cut lists for drawer fronts, backs, sides, and bottoms based on your opening size.
Launch Tool →Crown Molding Calculator
Get exact Miter and Bevel angles for compound cuts (Flat or Nested).
Launch Tool →The Shelf Sagulator
Will it bend? Calculate shelf sag based on wood species, thickness, and span.
Launch Tool →Reference Library
DatabasesWood Species Database
Searchable Janka hardness and density chart. Compare properties of 20+ common lumber species.
Open Database →Screw & Fastener Chart
Find the right drill bit sizes for pilot holes and clearance holes (Hardwood vs Softwood).
Launch Chart →Framing & Outdoor
ConstructionDecking Calculator
Estimate deck boards and fasteners based on square footage and joist spacing.
Launch Tool →Construction Math
Feet-inch arithmetic, triangle solutions, and roof pitch helpers for framing layout in the shop or on site.
Launch Calculator →Guides
LearnBoard Feet & Nominal Thickness
How hardwood yards invoice volume — and why 4/4 is not the thickness off the planer.
Read Guide →Cut Lists, Kerf & Yield
Pack parts into real stock lengths without forgetting blade kerf and end trim.
Read Guide →All Woodworking Guides
Cabinet door math, shelf deflection, and more long-form notes tied to these tools.
Browse Guides →About SawdustLogic
SawdustLogic is a free suite of shop-floor calculators for woodworkers, cabinetmakers, and carpenters who need accurate cut lists, lumber takeoffs, and layout math without opening a spreadsheet. Every tool runs in the browser: enter the dimensions you already measure with a tape, and get board feet, rail and stile lengths, crown angles, shelf sag, or deck board counts in seconds.
The suite is organized the way a shop works. Start in the lumber yard with board-foot pricing and cut optimization before you buy stock. Move into the workshop for doors, drawers, cutting boards, and crown. Use the reference library when you need species hardness or pilot-hole sizes. Framing and outdoor tools cover decking and feet-inch construction math for story poles, rafters, and field layout.
How to pick a tool
- Buying lumber? Use the Board Foot Calculator for volume and cost, then Lumber Optimizer or Visual Cut Planner to pack parts into real stock lengths or sheet goods.
- Building casework? Cabinet Door and Drawer Box calculators turn openings and overlay into rail, stile, and box cut lists. Shelf Sagulator checks span before you commit to a species and thickness.
- Layout and angles? Construction Math handles feet-inch arithmetic and common rafters; Crown Molding gives miter and bevel for flat or nested cuts.
- Want deeper explanation? Practitioner Guides cover nominal thickness, kerf yield, door overlay math, and shelf deflection — linked from each relevant tool.
FAQ
Are these tools free to use?
Yes. SawdustLogic tools are free in the browser. Ads help keep them available; Pro unlocks remove ads if you purchase a Logic App Labs product key.
Do I need an account or to upload my cut lists?
No. Calculations run locally in your browser. Closing the tab clears your inputs — nothing is uploaded to Logic App Labs servers.
How is this different from a phone calculator?
These tools speak shop units: nominal thickness, overlay, kerf, feet-inch-fraction, and wood species properties. You get cut lists and takeoffs shaped for the work, not just raw arithmetic.
Where should I start if I am new?
For hardwood purchasing, open Board Foot Calculator plus the Board Feet & Nominal Thickness guide. For cabinets, start with Cabinet Door Calculator. For framing layout, use Construction Math under Framing & Outdoor.