Construction Calculators

Paver Calculator

Estimate pavers needed from area, paver size, joint width, and waste allowance.

Paver Sand Calculator

Free online Paver Sand Calculator. Quickly calculate and get instant results.

Pipe Weight Calculator

Free online Pipe Weight Calculator. Quickly calculate and get instant results.

Pitch Diameter Calculator

Estimates thread pitch diameter from outside diameter and thread pitch (60° threads).

Plate Weight Calculator

Free online Plate Weight Calculator. Quickly calculate and get instant results.

Plywood Calculator

Free online Plywood Calculator. Quickly calculate and get instant results.

Pond Calculator

Computes pond surface area and water volume for rectangular, circular, or oval ponds.

Pool Calculator

Estimates pool volume using shape, surface dimensions, and shallow/deep depths.

Pool Volume Calculator

Calculate swimming pool volume.

Post Hole Concrete Calculator

Free online Post Hole Concrete Calculator. Quickly calculate and get instant results.

Privacy Fence Calculator

Free online Privacy Fence Calculator. Quickly calculate and get instant results.

Punch Force Calculator

Calculates sheet metal punching force using shear strength, thickness, perimeter, and safety factor.

Rafter Length Calculator

Compute sloped rafter length from span, roof pitch (rise/run), and overhang.

Ramp Slope Calculator

Free online Ramp Slope Calculator. Quickly calculate and get instant results.

Rebar Calculator

Calculate rebar needed for a concrete slab.

Retaining Wall Calculator

Free online Retaining Wall Calculator. Quickly calculate and get instant results.

Rip Rap Calculator

Estimate rip rap volume and weight from area, thickness, density, and waste allowance.

River Rock Calculator

Calculate river rock volume and weight needed from area, depth, density, and waste.

Rivet Size Calculator

Estimate rivet length from grip thickness plus shop-head allowance (typically ~1.5× diameter).

Road Base Calculator

Estimate road base volume (yd³) and tons from length, width, compacted depth, density, and waste.

Rolling Offset Calculator

Compute rolling offset (true diagonal) from two perpendicular offsets.

Roof Calculator

Calculate roofing materials needed.

Roof Pitch Calculator

Free online Roof Pitch Calculator. Quickly calculate and get instant results.

Roof Shingle Calculator

Free online Roof Shingle Calculator. Quickly calculate and get instant results.