Tools

Free Engineering and Analysis Tools

251 calculators in 13 areas. Every tool writes out its equations with the substituted numbers, cites its sources and reproduces at least one published example, which the worked examples pages list. No sign-in is needed; a free account saves inputs.

Structures 91 tools

Materials (7) · Composites (4) · Frames and Trusses (1) · Beams (7) · Loads and Dynamics (10) · Joints (7) · Stress and Strain (6) · Stability (4) · Plates and Shells (10) · Thin-Walled Structures (10) · Contact (1) · Stress Concentrations (18) · Fatigue (4) · Damage Tolerance (2)

Civil and Geotechnical 16 tools

Design Loads (2) · Steel Design (2) · Concrete Design (2) · Foundations (2) · Soils (2) · Timber and Masonry (2) · Hydraulics (2) · Surveying and Earthwork (2)

Mechanical Design 22 tools

Shafts (2) · Gears (2) · Bearings (1) · Springs (1) · Fasteners and Power Screws (2) · Pressure Vessels (2) · Tolerances (2) · Mass Properties (1) · Vibration (2) · Acoustics (2) · Brakes, Clutches and Belts (2) · Machining and Manufacturing (2) · Lubrication and Wear (1)

Fluids and Heat Transfer 16 tools

Pipe Flow (3) · Pumps and Fans (2) · Compressible Flow (2) · Conduction (2) · Convection (1) · Radiation (1) · Heat Exchangers (2) · Thermodynamic Cycles (2) · Fluid Properties (1)

Aerodynamics 15 tools

Airfoils and Wings (1) · Rotors and Propellers (9) · Aircraft Performance (2) · Stability and Control (1) · Atmosphere and Flight Conditions (1) · Propulsion (1)

Building Systems 22 tools

HVAC Loads (1) · Ducts and Airflow (4) · Psychrometrics (3) · HVAC Equipment (2) · Ventilation and Air Quality (2) · Energy (1) · Plumbing (1) · Fire Protection (2) · Lighting and Electrical (3) · Controls and Commissioning (1) · Codes and Compliance (2)

Quality 10 tools

Control (4) · Measurement (2) · Design of Experiments (1) · Improvement (2) · Inspection and Metrology (1)

Reliability 10 tools

Life Data (2) · System Models (2) · Growth and Testing (2) · Physics of Failure (2) · Maintainability and Availability (1) · Safety Analysis (1)

Statistics 12 tools

Descriptive and Outliers (1) · Hypothesis Tests (2) · Regression and Modelling (2) · Distributions (1) · Forecasting (1) · Surveys and Sampling (2) · Uncertainty and Monte Carlo (2) · Probability (1)

Operations Research 9 tools

Optimization (2) · Queueing and Simulation (1) · Scheduling (2) · Inventory and Supply Chain (1) · Decision Analysis (2) · Networks and Routing (1)

Project Management 8 tools

Schedule (2) · Cost (2) · Risk (1) · Resources (2) · Contracts and Claims (1)

Finance and Business 15 tools

Finance (2) · Accounting (2) · Economics and Damages (2) · Personal Finance (2) · Pricing (3) · Marketing (2) · Insurance (1) · Operations and Capacity (1)

Units 5 tools

Conversion (1) · Calculators (2) · Learning (1) · Tables and Lookups (1)