Plan DIY Projects with Confidence
HomeBuildCalc is a free digital blueprint and estimator platform for DIY enthusiasts and residential contractors. Every tool provides instant calculations, a live SVG blueprint, photo overlay visualization, and IRC building-code guardrails — all in your browser with no signup required.
Indoor Projects
Ten calculators for interior renovations and built-ins — from stair stringers and accent walls to kitchen islands, crown molding angles, and basement stud framing.
- Staircase Stringer CalculatorRise, run, tread depth, and stringer cutting angles from total vertical drop.
- Accent Wall Wood BattensSpacing, layout, and count of wood slats for geometric feature walls.
- Closet Organizer LayoutShelving and hanging rod distribution for custom wardrobe dimensions.
- Built-in Bookcase DesignerUniform shelving spacing accounting for vertical wood thickness.
- Mudroom Bench & Cubby FrameStructural framing cut lists for entry benches and overhead cubbies.
- Drywall Sheet Estimator4×8 or 4×12 sheet count for a room, with window/door subtractions.
- Floor Tile Grid Pattern LinkerTile counts, grout gaps, and waste margins for grid or herringbone layouts.
- Kitchen Island Dimensioning ToolCountertop overhang comfort vs required perimeter walking clearances.
- Crown Molding Angle FinderCorner wall deviations into exact miter and bevel cuts for miter saws.
- Basement Framing Stud Planner16" or 24" on-center stud counts along uneven foundation walls.
Outdoor Projects
Ten calculators for decks, fences, garden structures, concrete work, and more — with visual blueprints you can overlay on photos of your yard or home.
- Freestanding Deck FramerBeam sizing, joist spacing, ledger fasteners, and deck board totals.
- Property Line Fence & Post EstimatorPosts, rails, pickets, and quick-crete bags for fence runs and gates.
- Raised Garden Bed Tier SystemStacked lumber stabilization and interior soil volume calculations.
- Traditional Garden Pergola ArchitectRafter tail spacing, post footprint spacing, and cantilever overhangs.
- Sloped Roof Woodshed PlannerPitch, rafter cuts, and roofing material squares for a lean-to shed.
- Concrete Slab & Footer Volume ToolTrench and slab volumes into cubic yards/meters of concrete mix.
- Retaining Wall Block Stacking ToolTier step-backs, gravel drainage backfill, and geogrid layer planning.
- Patio Paver & Base Rock EstimatorCrushed stone tons, bedding sand volume, and interlocking paver counts.
- A-Frame Greenhouse Structural ToolFraming angles, polycarbonate panel sizing, and ventilation ratios.
- Horizontal Trash Can EnclosureVentilated slatted concealment box with lid clearance calculations.