Engineering ToolBox

Tools and Basic Information for Design, Engineering and Construction of Technical Applications

Coefficients of Linear Thermal Expansion

Linear temperature expansion coefficients for aluminum, copper, glass, iron and other common materials

Modulus of Elasticity or Young's Modulus - and Tensile Modulus for common Materials

Young's Modulus - Tensile Modulus or Modulus of Elasticity - for steel, glass, wood and other common materials

Thermal Conductivity of common Materials and Gases

Thermal conductivity of gases, insulation products, aluminum, asphalt, brass, copper, steel and other common materials

Density of jet fuel as function of temperature

Variations in jet fuel density are shown as function of temperatur, together with volume correction factors.

Autoignition temperature and flash point of different hydrocarbons

Autoignition temperature and flash point ( °C and °F) of different types of hydrocarbons with varying carbon number up to C12

Steel Pipe Dimensions - ANSI Schedule 40

Internal and external diameters, areas, weights, volumes and number of threads for ANSI schedule 40 steel pipes

Absolute, Dynamic and Kinematic Viscosity

Dynamic, absolute and kinematic viscosities - convert between CentiStokes (cSt), centipoises (cP), Saybolt Universal Seconds (SSU) and degree Engler

Conversion Chart - from Inches to mm

Convert fractional and/or decimal inches to metric mm - and vice versa

Water - Density and Specific Weight

Density and specific weight of water at temperatures ranging 0 to 100 oC (32 to 212 oF) - in Imperial and SI Units

Flanges and Bolt Dimensions ASME/ANSI B16.5 - Class 150 to 2500

Diameters and bolt circles for standard ASME B16.5 flanges - 1/4 to 24 inches - Class 150 to 2500

Wire Gauge Converter - AWG versus square mm

American Wire Gauge (AWG) versus square mm cross sectional area

Boiling points of hydrocarbons, alcohols and acids

Boiling temperature (°C and °F) with varying carbon number up to C33

Area Moment of Inertia

Area Moment of Inertia, Moment of Inertia of an Area or Second Moment of Area

American Wide Flange Beams - W Beam

Dimensions of American Wide Flange Beams ASTM A6 - Imperial units

Water - Thermodynamic Properties

Thermal properties of water - density, freezing temperature, boiling temperature, latent heat of melting, latent heat of evaporation, critical temperature and more

Stress, Strain and Young's Modulus

Stress is force per unit area - strain is the deformation of a solid due to stress

Friction and Friction Coefficients

Friction theory and coefficients of friction for ice, aluminum, steel, graphite and other common materials and materials combinations

Inches - Decimal Equivalents

Decimal equivalents of eights, sixteenths, thirty-seconds and sixty-fourths of an inch

Air Properties

Density, specific heat, thermal conductivity, expansion coefficient, kinematic viscosity and Prandtl's number - air temperature ranging -150 oC to 400 oC

Density, Specific Weight and Specific Gravity

An introduction to density, specific gravity and specific weight - formulas with examples

P&ID Diagram - Online Drawing Tool

Draw P&ID diagrams online in the browser with Google Docs

Material Properties

Material properties for gases, fluids and solids - densities, specific heats, viscosities and more

Water - Dynamic and Kinematic Viscosity

Viscosity of water at temperatures ranging 0 to 100 oC (32 to 212 oF) - Imperial and SI Units

Conversion Chart - from Inches to mm

Convert fractional and/or decimal inches to metric mm - and vice versa


Room acoustics and acoustic properties - decibel A, B and C - Noise Rating (NR) curves, sound transmission, sound pressure, sound intensity and sound attenuation

Air Psychrometrics

The study of moist and humid air - psychrometric charts, Mollier diagrams, air-condition temperatures and absolute and relative humidity and moisture content


The SI-system, unit converters, physical constants, drawing scales and more


Boiler house topics - fuels like oil, gas, coal, wood - chimneys, safety valves, tanks - combustion efficiency

Drawing Tools

2D and 3D drawing tools


Motion - velocity and acceleration, forces and torques


Engineering economics - cash flow diagrams, present value, discount rates, internal rates of return - IRR, income taxes, inflation


Electrical units, amps and electrical wiring, wire gauge and AWG, electrical formulas and motors


Climate, meteorology, sun, wind and environmental resources

Fluid Mechanics

The study of fluids - liquids and gases. Involves velocity, pressure, density and temperature as functions of space and time

Gases and Compressed Air

Air, LNG, LPG and other common gas properties, pipeline capacities, sizing of relief valves

HVAC Systems

Heating, ventilation and air conditioning systems - design and dimensions

Hydraulics and Pneumatics

Hydraulic and pneumatic systems - fluids, forces, pumps and pistons


Heat transfer and heat loss from buildings and technical applications - heat transfer coefficients and insulation methods and to reduce energy consumption

Material Properties

Material properties for gases, fluids and solids - densities, specific heats, viscosities and more


Mathematical rules and laws - numbers, areas, volumes, exponents, trigonometric functions and more


Forces, acceleration, displacement, vectors, motion, momentum, energy of objects and more


Engineering related topics like Beaufort Wind Scale, CE-marking, drawing standards and more


Human physiology, air quality and comfort temperatures, activity and metabolic rates, health effects of carbon monoxide and more

Piping Systems

Dimensions of pipes and tubes, materials and capacities, pressure drop calculations and charts, insulation and heat loss diagrams

Process Control

Instrumentation and process control systems, design and documentation


Piping systems and pumps - centrifugal pumps, displacement pumps - cavitation, viscosity, head and pressure, power consumption and more

Standard Organizations

National and International organizations producing codes and standards - ANSI, ISO, DIN, BSi and more


Loads - force and torque, beams and columns

Steam and Condensate

Steam & condensate systems- properties, capacities, pipe sizing, systems configuration and more


Effects of work, heat and energy on systems

Water Systems

Hot and cold water service systems - design properties, capacities, sizing and more

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Engineering ToolBox - SketchUp Extension - Online 3D modeling!

3D Engineering ToolBox Extension to SketchUp - add parametric components to your SketchUp model

Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your SketchUp model with the Engineering ToolBox - SketchUp Extension/Plugin - enabled for use with the amazing, fun and free SketchUp Make and SketchUp Pro . Add the Engineering ToolBox extension to your SketchUp from the Sketchup Extension Warehouse!

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