Materials Specifications calculators
22 calculators Insulation Calculator Find how many bags of blown-in cellulose or fiberglass insulation you need by area, climate zone or target R-value. Get required depth, bag count, weight and project cost.
Open Beam Deflection Calculator Calculate maximum beam deflection, bending moment, shear force and slope for simply-supported or cantilever beams under 6 load types. Metric and imperial units.
Open Beam Load Calculator Find beam reactions, bending moment, shear force, deflection, and bending stress for simply-supported or cantilever beams under point or distributed loads.
Open Bending Stress Calculator Calculate bending stress (sigma = Mc/I) for 7 beam cross-sections. Get moment of inertia, section modulus, max stress, and a stress distribution visual.
Open Bolt Torque Calculator Calculate bolt tightening torque and clamping preload from diameter, bolt grade, and lubrication. Works for metric and imperial bolts with reverse-solve mode.
Open Box Fill Calculator Calculate the required electrical box volume per NEC 314.16. Enter conductor sizes, device count, clamps, and grounding conductors to find the minimum box size needed.
Open Carbon Equivalent Calculator Calculate steel carbon equivalent (CE) with the IIW, AWS D1.1, Pcm, and JWES formulas. Get a weldability rating and preheat guidance from your mill test report.
Open CFM Calculator Calculate CFM from room dimensions and air changes per hour, or from duct area and air velocity. Includes ACH reverse-solve, unit switching, and room-type reference.
Open Door Header Size Calculator: Beam Span and Lumber Sizing Find the right door header size for any rough opening. Enter span, load condition, and wall type to get the recommended header, jack stud count, and maximum span.
Open Floor Joist Calculator Calculate max floor joist span, joist count, and material cost. Covers 5 wood species, 4 lumber grades, standard spacings, and 3 deflection limits. Free tool.
Open Junction Box Sizing Calculator Calculate junction box size per NEC Article 314.16. Enter wire count, AWG size, devices, clamps and grounding conductors to find required cubic inches instantly.
Open K-Factor Calculator for Sheet Metal Bending Calculate the K-factor for sheet metal bending, plus bend allowance, bend deduction, outside setback and flat blank length. Free, instant, with worked steps.
Open Material Removal Rate Calculator Calculate material removal rate (MRR) for milling, turning, drilling, grooving, and grinding in metric or imperial units. Instant results with step-by-step working.
Open Pitch Diameter Calculator Find pitch diameter for gears (module or DP) and metric or UN threads. Includes ISO tolerance grades, minor diameter, three-wire measurement, and step-by-step working.
Open Punch Force Calculator Calculate punch force for sheet metal stamping. Pick material, hole shape, and thickness to get required press tonnage in kN, lbf, and metric tons, plus die clearance.
Open Rivet Size Calculator Find the correct rivet diameter, shank length, and hole size for any joint. Supports metric and imperial units, four rivet types, and spacing rules from FAA AC 43.13-1B.
Open Spindle Speed Calculator Calculate spindle speed (RPM) from cutting speed and tool diameter for milling and turning. Includes feed rate, material reference table, and metric/imperial units.
Open Taper Calculator Calculate taper angle, taper ratio, TPI, TPF, and half-angle from large diameter, small diameter, and length. Works in metric and imperial units.
Open Thread Calculator Calculate screw thread dimensions instantly: major diameter, pitch diameter, minor diameter, thread depth, TPI, lead and tap drill size for metric and imperial threads.
Open Thread Pitch Calculator Calculate thread pitch, TPI, major diameter, minor diameter, pitch diameter, thread depth and tap drill size for metric ISO and unified imperial (UNC) threads.
Open Welding Calculator Calculate weld joint strength, heat input (kJ/mm), wire consumption, deposition rate, and arc-on time. Covers fillet and butt welds, five processes. Free and instant.
Open Wood Beam Span Calculator Calculate wood beam deflection, bending stress, and shear stress for any species, grade, and size. Instant pass/fail check against NDS span limits.
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