Engineering Calculators & Tools

Free online calculators for structural, mechanical, electrical, and manufacturing applications. Each tool features interactive 3D visualization and documented formulas.

🏗️ Structural Engineering (5)⚡ Electrical Engineering (5)⚙️ Mechanical Engineering (5)🏭 Manufacturing & Production (7)💧 Fluid Mechanics (5)🌡️ Heat Transfer & Thermal (3)

🏗️ Structural Engineering Calculators

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Beam Deflection Calculator
Calculate maximum deflection, bending moment, and stress for simply supported and cantilever beams. Includes 3D visualization.
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Column Buckling Calculator
Calculate critical buckling load for columns using Euler formula. Supports various end conditions and cross-sections.
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Mohr's Circle Calculator
Calculate principal stresses, maximum shear stress, and stress transformation angles using Mohr's Circle for plane stress analysis.
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Stress-Strain Calculator
Calculate stress, strain, and elastic modulus from basic inputs. Includes true stress/strain conversion, Poisson's ratio effects, and interactive stress-strain curve visualization.
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Moment of Inertia Calculator
Calculate moment of inertia (second moment of area), section modulus, and radius of gyration for common cross-sectional shapes including rectangles, circles, I-beams, and channels.

⚡ Electrical Engineering Calculators

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Voltage Drop Calculator
Calculate voltage drop and power loss in electrical circuits. Recommend optimal AWG wire sizes for DC, single-phase, and three-phase systems.
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Electric Motor Sizing Calculator
Calculate electric motor power requirements, torque, and recommended motor size. Supports load analysis and standard motor selection.
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Ohm's Law Calculator
Calculate voltage, current, resistance, or power using Ohm's Law. Enter any two known values to solve for the remaining electrical properties with animated circuit visualization.
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Wire Size Calculator
Determine correct wire size based on current load and NEC ampacity tables. Applies temperature correction, conduit fill derating, and continuous load factors.
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Power Factor Calculator
Calculate power factor from electrical measurements or determine capacitor sizing for power factor correction. Analyze real, reactive, and apparent power with 3D power triangle visualization.

⚙️ Mechanical Engineering Calculators

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Gear Ratio Calculator
Calculate gear ratios, output RPM, and torque for gear trains. Includes animated visualization of gear rotation.
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Spring Calculator
Calculate spring rate, deflection, and stress for compression and extension springs. Includes animated 3D visualization.
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Belt Drive Calculator
Calculate belt length, speed ratio, wrap angles, and torque for V-belt, flat belt, and timing belt drive systems.
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Torque Calculator
Calculate torque from force and lever arm, convert between torque units, and determine force or distance for required torque. Includes angular acceleration calculations.
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Bearing Life Calculator
Calculate bearing fatigue life using ISO 281 standard. Determine L10 life, adjusted life with reliability factors, and equivalent dynamic load with animated 3D visualization.

🏭 Manufacturing Calculators

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Material Weight Calculator
Calculate weight and cost for plates, bars, tubes, and pipes in various materials including steel, aluminum, and copper.
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Bolt Torque Calculator
Calculate bolt torque, preload force, and clamping force for threaded fasteners. Supports metric and imperial threads.
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Weld Sizing Calculator
Calculate required fillet and groove weld sizes based on applied loads and AWS D1.1 provisions. Determine weld throat and allowable stress.
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Process Capability Calculator
Calculate Cp, Cpk, and other process capability indices. Analyze manufacturing process quality against specification limits with PPM defect estimation.
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Screw Size Chart
Interactive screw size reference. Look up major diameter, minor diameter, thread pitch, tap drill size, and clearance hole for machine screws in UNC, UNF, and metric standards.
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Bolt Size Chart
Interactive bolt size reference. Look up head dimensions, thread specifications, recommended hole sizes, and matching nut dimensions for hex bolts in SAE and metric standards.
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CNC Feed and Speed Calculator
Calculate optimal spindle RPM, feed rate, and material removal rate for CNC milling, drilling, and turning operations with animated 3D visualization.

💧 Fluid Mechanics Calculators

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Pipe Pressure Drop Calculator
Calculate pressure drop in straight pipes using the Darcy-Weisbach equation. Determine flow regime, friction factor, and head loss.
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Hydraulic Cylinder Calculator
Calculate force, pressure, and flow requirements for hydraulic cylinders. Size cylinders for extend and retract operations.
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Pump Sizing Calculator
Calculate pump power requirements, total dynamic head, and motor sizing. Determine pump type based on specific speed and NPSH availability.
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Tank Volume Calculator
Calculate storage tank capacity for cylindrical, rectangular, and spherical tanks. Supports partial fill calculations with liquid weight estimation and 3D visualization.
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Orifice Flow Calculator
Calculate flow rate, orifice size, or pressure drop for orifice plate flow meters using ISO 5167 principles. Includes animated 3D visualization of flow through the orifice.

🌡️ Heat Transfer Calculators

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Heat Transfer Calculator
Calculate heat transfer rate through walls and materials using conduction. Determine R-value, U-value, and temperature distribution.
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Thermal Expansion Calculator
Calculate dimensional changes due to temperature variation using linear thermal expansion. Includes thermal stress calculation for constrained members and material CTE database.
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BTU Calculator
Calculate heating and cooling load requirements for rooms and buildings. Determine BTU capacity for HVAC equipment sizing with 3D heat flow visualization.

About Our Engineering Calculators

Simulyzers provides free online engineering calculators designed for practicing engineers, students, and technical professionals. Each calculator uses industry-standard formulas with clear documentation of assumptions, limitations, and applicable standards.

Calculator Features

  • Interactive 3D visualization for design verification
  • Real-time calculations with instant results
  • Unit conversion between metric and imperial systems
  • Shareable URLs to collaborate with colleagues
  • Mobile-responsive design for field use
  • Documented formulas with reference sources

Engineering Disciplines