- Construction Calculator
- Automotive Calculator
- Networking Calculator
- Technology Calculator
- Cloud Services Calculator
-
Gambrel Roof CalculatorCalculate gambrel (barn) roof rafter lengths, total rise, and slope dimensions from span, upper width, and the two slope angles.
-
Rafter Length CalculatorCalculate roof rafter length from rise and run using the Pythagorean theorem. Get total length with overhang, pitch angle, and slope per 12.
-
Roof Shingle CalculatorEstimate how many roofing squares and shingle bundles you need. Enter roof dimensions, planes, and waste allowance to get an accurate material count.
-
Roof Pitch CalculatorCalculate roof pitch from rise and run: get the pitch angle in degrees, the rise-per-12 ratio, slope percentage, and rafter length instantly.
-
Roof Truss CalculatorCalculate how many roof trusses you need from roof length and truss spacing. Free roof truss count calculator with on-center spacing.
-
Asphalt CalculatorFree asphalt calculator estimates tons of hot-mix asphalt needed by length, width, and thickness using a 145 lb/ft³ density. Fast and accurate.
-
Concrete Driveway Cost CalculatorEstimate the cost of a concrete driveway from its length, width, thickness, and price per cubic yard. Get cubic yards needed and total material cost.
-
Crushed Stone CalculatorEstimate how many tons and cubic yards of crushed stone you need for driveways, patios and base layers from length, width and depth.
-
Fire Flow CalculatorCalculate required fire flow (GPM) using the Iowa and National Fire Academy formulas from building length, width, and percent of area involved.
-
Gravel Driveway CalculatorCalculate how much gravel you need for a driveway in tons, cubic yards, cubic feet and pounds. Enter length, width, depth and gravel density.
-
Floor Joist CalculatorCalculate how many floor joists you need from floor length and on-center spacing (12, 16, 19.2, or 24 in). Fast framing estimate for builders.
-
Insulation CalculatorCalculate how many bags of insulation you need. Enter room length, width, and coverage per bag to get total area and bags required, rounded up.
-
Steel Weight CalculatorCalculate the weight of steel bars, plates and sheets from dimensions using weight = volume × density (≈7850 kg/m³). Supports round, square and rectangular sections.
-
Tonnage CalculatorCalculate the tonnage of gravel, sand, soil or stone from length, width, depth and density. Get total weight in US short tons instantly.
-
Stone Weight CalculatorEstimate the weight of a stone block from its length, width, height and density. Get results in kilograms, tonnes and pounds instantly.
-
Board-on-Board Fence CalculatorCalculate how many boards (pickets) you need for a board-on-board fence based on fence length, board width, and overlap between boards.
-
Vinyl Fence CalculatorEstimate how many vinyl fence panels and posts you need for your project. Enter total length and panel width to get materials and optional cost.
-
Vinyl Siding CalculatorEstimate how many squares of vinyl siding you need. Enter wall area, subtract windows and doors, add a waste allowance — 1 square = 100 sq ft.
-
Wall Square Footage CalculatorCalculate wall square footage by multiplying width by height and subtracting door and window openings. Get net paintable or coverable area in sq ft.
-
Cement CalculatorCalculate how many bags of cement you need for a concrete slab or pour. Enter dimensions, mix ratio and bag volume to estimate cement bags.
-
Concrete Block CalculatorFree concrete block calculator. Enter wall and block dimensions to estimate how many CMU blocks you need, including a waste allowance.
-
Concrete Column CalculatorCalculate concrete volume for round or rectangular columns. Enter diameter or width/depth, height, and quantity to get m³ and cubic yards instantly.
-
Concrete Block Fill CalculatorCalculate how much concrete you need to fill the voids in concrete blocks (CMU). Enter block count and void volume to get cubic feet and cubic yards.
-
Concrete Stairs CalculatorCalculate concrete volume for stairs from step count, rise, run, width and platform. Get cubic meters, cubic yards, weight and premix bag estimates.
