Construction & Materials
Concrete, framing, finishes and structural estimates.
32 tools · 8 sub-topics
concrete
Concrete Slab Calculator
Estimate the concrete volume, cubic yards and 80 lb bag count needed for a rectangular slab.
Concrete Footing Calculator
Calculate the concrete volume and bag count needed for a continuous strip footing.
Concrete Pier Calculator
Estimate cubic yards and 80 lb bags for cylindrical concrete piers or footings.
Concrete Mix Ratio Calculator
Split a target concrete volume into cement, sand and aggregate quantities by mix ratio.
hvac
R-Value to U-Factor Calculator
Convert insulation R-value to U-factor (thermal transmittance), and vice versa.
HVAC Cooling Load Calculator
Estimate the sensible cooling load and required tonnage for a room based on floor area.
Ductwork Sizing Calculator
Determine round duct diameter or rectangular duct dimensions required for an airflow rate.
interior
Drywall Sheets & Joint Compound Calculator
Estimate the number of drywall sheets and buckets of joint compound needed for a room.
Tile & Grout Calculator
Estimate the number of tiles and grout needed for a floor or wall area.
Flooring Calculator with Waste Allowance
Estimate flooring material required for a room including a 10% (or custom) waste allowance.
Paint Coverage Calculator
Estimate the gallons of paint needed for walls and ceilings across multiple coats.
Wallpaper Rolls Calculator
Estimate the number of wallpaper rolls needed for a room including pattern repeat waste.
masonry
materials
Board Feet Calculator
Calculate board feet of lumber from thickness, width, length and quantity.
Steel Weight Calculator
Estimate the weight of common steel shapes (plate, round bar, square bar) from dimensions.
Sheet Metal Gauge Calculator
Convert sheet metal gauge number to thickness and estimate sheet weight.
roofing
Roof Pitch & Rafter Length Calculator
Calculate roof pitch angle and rafter length from run and rise.
Shingle Squares Calculator
Estimate the number of roofing squares and shingle bundles needed for a roof area.
Stairs Rise, Run & Stringer Calculator
Calculate the number of steps, rise, run and stringer length for a staircase.
sitework
Earthwork End-Area / Prismoidal Calculator
Estimate cut/fill earthwork volume between two cross-section areas using the average end-area and prismoidal methods.
Roadway Curve & Superelevation Calculator
Calculate minimum horizontal curve radius and required superelevation rate for a design speed.
Asphalt Tonnage Calculator
Estimate the tonnage of asphalt needed to pave an area at a given thickness and density.
Rational Method Runoff Calculator (Q=CIA)
Estimate peak stormwater runoff from a drainage area using the rational method, Q = CIA.
Manning's Equation Calculator
Calculate open-channel flow velocity and discharge using Manning's roughness equation.
Pipe Diameter Calculator
Determine the required pipe diameter to carry a target flow rate at a maximum velocity.
structural
Rankine Earth Pressure Calculator
Calculate active and passive lateral earth pressure and resultant force using Rankine theory.
Simply Supported Beam Calculator
Find maximum bending moment, deflection and reactions for a simply supported beam under a uniform load.
Cantilever Beam Calculator
Calculate maximum moment, deflection and reaction for a cantilever beam with a point load at the free end.
Euler Buckling Load Calculator
Estimate the critical buckling load of a slender column using Euler's formula.
Truss Method of Joints Calculator
Solve the two unknown member forces at a truss joint using static equilibrium (method of joints).
Terzaghi Bearing Capacity Calculator
Estimate the ultimate bearing capacity of a strip footing using Terzaghi's equation.