Engineering Calculators
Financial tools for engineers. Calculate NPV (Net Present Value), IRR (Internal Rate of Return), and depreciation for capital asset planning.
Calculate the exact length of metal bars, rods, and sheets from weight. Supports Steel, Aluminum, Copper,...
Calculate optimal RPM and Feed Rate for milling and turning. Includes a material library (Aluminum, Steel,...
Calculate Elastic Section Modulus (S or Z) for beams. Compare the strength-to-weight ratio of different shapes.
Calculate Modulus of Rupture (MOR) for 3-point and 4-point bending tests. Includes reference values for concrete,...
Calculate the total weight of Structural Steel Channels. Supports American Standard (C shapes) and European (UPN/UPE)...
Calculate the precise material and energy cost of 3D printed parts. Compare DIY manufacturing costs against...
Calculate bend allowance, bend deduction, outside setback, and flat pattern length for sheet metal bending with...
Calculate 3D render time, VRAM usage, and cost estimates based on scene complexity, hardware specs, and...
Calculate beam reactions, bending moment, shear force, deflection, and stress for simply supported and cantilever beams...
Calculate Brake Mean Effective Pressure (BMEP) from torque and displacement. Supports 2-stroke and 4-stroke engines with...
Calculate bolt torque, preload force, and clamping load for SAE and Metric fasteners. Supports multiple grades,...
Calculate bolt hole positions on a pitch circle diameter (PCD). Get exact X/Y coordinates, angles, and...
Calculate carbon equivalent (CE) using IIW, Pcm, and CEN formulas. Assess steel weldability and preheat requirements...
Calculate roller chain length from sprocket teeth, pitch, and center distance. Supports ANSI, ISO, bicycle, and...
Calculate Euler critical buckling load, slenderness ratio, and allowable column load with Johnson's parabolic correction for...
Calculate valve flow coefficient (Cv) for liquids, gases, and steam using ISA/IEC standards. Supports unit conversion...
Calculate manufacturing cycle time, takt time, throughput rate, and OEE. Analyze production efficiency with real formulas...
Calculate bending stress (σ = My/I) for beams with auto moment of inertia for rectangle, circle,...
Calculate V-belt and flat belt length for open and crossed drive systems. Compute center distance, contact...
Calculate air-fuel ratio, lambda (λ), equivalence ratio (Φ), and excess air percentage for any fuel type....
Calculate whether buying a 3D printer or outsourcing prints is more cost-effective. Break-even analysis, TCO, ROI,...
Calculate the exact AWG wire size required for 12V DC electrical systems to prevent dangerous voltage...
Advanced engineering estimator for LCOW (Levelized Cost of Water). Calculates CAPEX, OPEX, energy intensity, and brine...
Count hex nuts by weight. Supports Metric (M3-M36) and Imperial (UNC/UNF). Includes a "Kit Calculator" to...