Construction Calculators

Calculate the right AC or heating BTU size for your room. Factors in area, ceiling height, insulation quality, climate zone, and sun exposure for accurate sizing.

Calculate the area of rectangles, circles, and triangles. Select a shape and enter the dimensions.

Calculate how much asphalt you need in tons for driveways, parking lots, and roads. Enter dimensions and thickness for accurate estimates.

Calculate beam load capacity for dimensional lumber, LVL, and steel beams. Enter beam type, span, and load type to get maximum loads, deflection, and recommended uses.

Calculate board feet for lumber pricing. Enter thickness, width, and length to convert to board feet, the standard unit for hardwood lumber.

Look up recommended torque specifications for bolts and fasteners. Select bolt diameter, grade, and lubrication to get dry and lubricated torque values and clamp force.

Calculate how many bricks you need for walls, patios, and walkways. Enter dimensions and bond pattern to get brick count and mortar estimate.

Calculate required CFM (cubic feet per minute) airflow for HVAC systems based on room size and air changes per hour. Includes recommended duct size.

Calculate how much concrete you need for a slab. Enter length, width, and depth to get cubic yards and number of bags.

Calculate the number of concrete blocks (CMU) needed for a wall. Enter dimensions and block size to get block count, mortar bags, and cost estimate.

Calculate how much concrete you need for steps and stairs. Enter step dimensions to get volume in cubic feet, cubic yards, bags needed, and estimated cost.

Convert length, width, and depth dimensions to cubic yards, cubic feet, and cubic meters. Includes concrete bag estimate for fill projects.

Calculate how many deck boards you need. Enter deck dimensions, board size, and spacing to get board count, screws, and cost estimate.

Calculate how many drywall sheets you need. Enter room dimensions to get sheet count, joint compound, tape, and screws needed.

Calculate fence post hole depth, diameter, and concrete needed per hole. Accounts for fence height, post size, soil type, and wind exposure.

Calculate fencing materials needed including posts, rails, and pickets. Enter fence length and height to get a complete materials list.

Calculate how much flooring you need. Enter room dimensions and flooring type to get square footage, boxes, and cost estimates.

Calculate materials for a French drain: gravel, perforated pipe, and landscape fabric. Enter trench dimensions to get quantities and estimated cost.

Calculate the furnace BTU capacity needed for your home based on square footage, climate zone, insulation quality, and ceiling height.

Calculate how much gravel you need in tons and cubic yards. Enter area dimensions and depth for accurate material estimates.

Calculate grout needed for tile installation based on tile size, joint width, and coverage area. Get results in pounds and number of bags.

Calculate gutter materials needed including linear feet, downspouts, hangers, and end caps. Enter roof dimensions for a complete estimate.

Estimate building heat loss through walls, windows, and ceiling. Calculate BTU/hr loss and required furnace size based on U-values and temperature difference.

Calculate how much insulation you need. Enter area dimensions and R-value to get batts, rolls, or blown-in insulation quantities.

Calculate how many boards you need for your project. Enter dimensions and spacing to get board count, total linear feet, and cost estimate.

Calculate the weight of metal plates, round bars, and tubes. Supports steel, aluminum, copper, brass, titanium, and stainless steel with precise density values.

Calculate mortar bags needed for brick and block work. Enter wall area and block type to get mortar quantity, block count, and cost estimate.

Calculate how much mulch you need in cubic yards and bags. Enter bed dimensions and desired depth for accurate coverage estimates.