Concrete, Roofing & Outdoor Structures

Convert square meters to square feet. Area conversion for real estate and flooring. Free unit converter with precise, instant browser-based conversions — no

Measure rectangular, circular and annular concrete groups with depth ranges, counts and voids. Reconcile exact bag yields or ready-mix terms and save source-owned planning records.

Convert liters to US gallons. Volume conversion for fuel, water, and liquids. Free unit converter with precise, instant browser-based conversions — no install

Calculate percentages in seven modes with visible formulas, strict input validation, signed percentage change, and symmetric percentage difference.

Convert roof pitch rise and run to angle, percent slope, and pitch factor. Essential for roofing material estimates, rafter layout, and drainage design.

Calculate rafter length from span, pitch, and overhang. Get rafter run, rise, diagonal length, and birdsmouth cut dimensions for roof framing.

Calculate asphalt shingles needed for your roof. Enter roof area and bundle coverage to get shingle bundles, squares, and waste allowance for reroofing.

Size gutters and downspouts from roof area and rainfall intensity. Calculate required gutter capacity, downspout count, and K-style or half-round sizing.

Convert feet to meters. Precise length conversion. For height, room dimensions, and construction. Free unit converter with precise, instant browser-based

Plan whole drywall sheets from measured wall and ceiling faces, openings, explicit allowance, exact selected sheet dimensions, and price.

Calculate exact lumber board feet, a user-chosen planning allowance, and a price scenario from measured dimensions and whole-piece count.

Calculate compacted aggregate volume, an explicit loose-order allowance, and tons from the exact supplier density without a universal conversion.

Calculate measured bed fill, an explicit top-up allowance, and optional exact-package bags without assuming one soil recipe, settling rate, or bag size.

Calculate measured mulch volume, an explicit order allowance, and optional exact-package bags without assuming one depth, material, bag size, or waste factor.

Turn a reviewed concrete volume range or measured rectangular pour into exact bag-pack or supplier-rounded ready-mix quantities, with matching stock and optional sourced quotes.

Build a measured multi-area takeoff, compare exact carton coverage with a reviewed source-tile count, and price whole packages after matching inventory.