Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications!

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Engineering ToolBox

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

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Air - Thermophysical Properties

Thermal properties of air - density, viscosity, critical temperature and pressure, triple point, enthalpi and entropi, thermal conductivity and diffusicity, and more

Charging Electrical Vehicles - Voltage, Amps and Power

EV - Electrical Vehicle Charging Stations - Power vs. Amps and Voltage - AC vs. DS - Single Phase vs. Three Phase

Coefficients of Linear Thermal Expansion

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

Hot Air Balloon Lifting Force

Calculate potential lifting force in hot air volume

Water - Thermophysical Properties

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

Friction and Friction Coefficients

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

Young's Modulus - Tensile and Yield Strength for common Materials

Young's Modulus or Tensile Modulus alt. Modulus of Elasticity - and Ultimate Tensile and Yield Strength 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

Water - Density, Specific Weight and Thermal Expantion Coefficient

Definitions, online calculator, figures and tables giving Density, Specific Weight and Thermal Expansion Coefficient of liquid water at temperatures ranging from 0 to 360 °C and 32 to 680°F - in Imperial and SI Units

Square, Cube, Square Root and Cubic Root

Calculator and tabulated values for numbers ranging from 1 to 100

American Wide Flange Beams - W Beam

Dimensions of American Wide Flange Beams ASTM A6 - Imperial units

Absolute, Dynamic and Kinematic Viscosity

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

Wire Gauge Converter - AWG versus square mm

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

Density, Specific Weight and Specific Gravity

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

Water - Dynamic and Kinematic Viscosity

Online calculator, figures and tables showing viscosity of water at temperatures ranging from 0 to 360 °C (32 to 675 °F) - 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

Conversion Chart - from Inches to mm

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

Wrench Spanner - Inches to mm

SAE to metric wrench and spanner converter chart

Area Moment of Inertia - Typical Cross Sections I

Area Moment of Inertia, Moment of Inertia for an Area or Second Moment of Area for typical cross section profiles

Dry Air Properties

Dry air properties at temperatures ranging 175 - 1900 K - specific heat, ratio of specific heats, dynamic viscosity, thermal conductivity, Prandtl number, density and kinematic viscosity

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Acoustics

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

Basics

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

Combustion

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

Drawing Tools

2D and 3D drawing tools

Dynamics

Motion - velocity and acceleration, forces and torques

Economics

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

Electrical

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

Environment

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

Insulation

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

Mathematics

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

Mechanics

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

Miscellaneous

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

Physiology

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

Pumps

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

Statics

Loads - force and torque, beams and columns

Steam and Condensate

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

Thermodynamics

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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Topics

Unit Converters

Temperature

oC
oF


Load Calculator!

Length

m
km
in
ft
yards
miles
naut miles


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Area

m2
km2
in2
ft2
miles2
acres


Load Calculator!

Volume

m3
liters
in3
ft3
us gal


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Weight

kgf
N
lbf


Load Calculator!

Velocity

m/s
km/h
ft/min
ft/s
mph
knots


Load Calculator!

Pressure

Pa (N/m2)
bar
mm H2O
kg/cm2
psi
inches H2O


Load Calculator!

Flow

m3/s
m3/h
US gpm
cfm


Load Calculator!

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