A
4 Unknown Calculator
Algebra calculator for solving 4 unknowns.
A Dictionary of Units
This provides a summary of most of the units of measurement
used today together with the appropriate conversion factors
needed to change them into a 'standard' unit of the S I.
A Glossary of Glassmaking Terms
Terminology provided by the Corning Museum of Glass.
A GLOSSARY OF SELECTED TERMS USED IN THE OIL INDUSTRY
By the Institute of Petroleum.
Acceleration Conversion Factors
Select units to convert from and to.
Acid Dew Point Calculations
Input process variables to calculate the dew point of an
acid.
Adobe Acrobat Reader
Adobe Acrobat Reader is free software that lets you view
and print Adobe Portable Document Format (PDF) files.
Air Leak Chart
Compressed air leaks can be very costly. Charts show typical
costs associated with leaks of various sizes.
Aluminium Alloys
Database
This database allows you to check the resistance of various
aluminium alloys to SCC in various environments.
An Interactive Quiz on Boilers and HRSGs
Utility to assist plant engineers keep current on their
boiler/HRSG skills.
Angle Converter
Convert to and from degrees, grades, minutes, quadrants,
radians, revolutions, etc.
Angle Converter
Geometry calculator for angles.
ASL Fingerspelling
Americal Sign Language fingerspelling dicionary, ASL fingerspelling
converter, and more.
B
Beam
Calculators
For various beam configurations, select a type, boundary
condition, and loading.
Bearing Fit Tolerance
Chart
Table of basic numbers, nominal bore in mm, and shaft
rotating minimum and maximum diameters in inches.
Boiler
Duty Calculations
Input process variables to calculate boiler duty.
Boiler Efficiency
Calculations
Input process variables to calculate boiler efficiency.
Boiler Water Glossary
Terminology provided by Saftek Boiler and Machinery.
Boyle's Law Calculator
Boyles Law states that the volume of a fixed mass of gas
at a constant temperature is inversely proportional to
the pressure of the gas.
Brittle
Failure Calculator
For a given stress state and safety factor, this calculator
applies the maximum normal stress criterion and Mohr's
theory to check if the principal stresses exceed a given
tensile or compressive strength.
BTU Calculator
This calculator is designed to give an estimate of the
heating needs of a room, combination of rooms, or an entire
building.
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C
Calculating Condensate
Loads
When the normal condensate load is not known, the load
can be approximately calculated using this formula.
Centrifugal
Compressor Sizing
This procedure determines the number of compression stages,
discharge temperature, head and both gas and brake horsepower
required per stage for a centrifugal compreesor.
Ceramic
Materials Data
Examples of materials data for ceramic materials.
Charles' Law Calculator
Charles' Law states that the volume of a fixed massof
gas at a constant pressure is directly proportional to
its absolute temperature.
Chemical Equation
Balancer
Chemical equation balancer to balance such chemical equations
as C6H12O6 + O2 = H2O + CO2.
Chemicool
Chemicool Chemistry Periodic table (periodic chart) of
the elements. Information about hydrogen, oxygen, silver,
carbon, aluminium...plus Forum, Dictionary and Tools.
Circle, Sphere & Cylinder Calculator
Geometry calculator for circles, spheres, and cylinders.
Circular Duct Differential
Pressure Calculator
You input the diameter of the duct in inches, and the
flow rate through the duct in cubic feet per minute.
Circular Duct Flow
Rate Calculator
You input the diameter of the duct in inches, and the
differential pressure across the duct in WC.
Coefficient
of Heat Transfer Converter
Coefficient of heat transfer conversion factors.
Combined Gas Law Calculator
Used when pressure, volume and temperature change.
Common Piping
Terminology
By the FlexHose Company.
Comparisons
of Materials: Coefficient of Thermal Expansion
Table of coeficients for many metals, and several ceramic
materials.
Compression
Spring Calculators
Frustrated by reading spring catalogs trying to figure
out which spring gives you the right force or displacement?
Maybe one of these calculators can help you.
Concentration
Conversion Factors
Select units to convert from and to.
Conversions of Industrial Gases
Convert a gas from one unit of measure to another.
Copper Alloys
Database
This database allows you to check the resistance of various
copper alloys to SCC in various environments.
Corrosion
Rate Calculator
Calculate corrosion rate in 4 quick steps by specifying
weight loss, area, density and time. This popular utility
allows you to specify values and gives the output in a
wide variety of units.
Crib Sheet for Plating
A periodic table for plating, electrochemical equivalents,
troubleshooting nuggets, other little used facts.
Crude
Oil & Products
Volume, weight, and flowrate conversion factors.
Crystal Lattice Structures
This page offers a concise index of common crystal lattice
structures. A graphical representation as well as useful
information about the lattices can be obtained by clicking
on the desired structure.
Cubic Equation Calculator
Algebra calculator for cubic equations.
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D
E
Elastic
Constant Converter
Calculator that allows you to convert from any 2 constants
to all others in common use.
Energy, Environmental, and
Economics (E3) Handbook
Information on a wide number of topics generally associated
with energy and environmental research and development,
such as environmental regulations, technology transfer
issues, energy statistics, etc.
Engineering Conversion Factors
Calculators for energy, pressure, volume, density, specific
volume, specific heat, enthalpy, thermal conductivity,
viscosity, and coefficient of heat transfer.
Engineering
Material Properties
Table gives various engineering material properties listed
alphabetically. The units are SI.
Engineering Unit Conversion
Calculator
Converts area, density, energy, force, length, mass, power,
pressure, speed, temperature, and volume.
Engineering
Units Conversion
Convert quantities like Energy, Pressure, Enthalpy, Entropy,
Viscosity from one system of units to another.
Evaluating Heat Transfer
Fluids Utility
Need a heat transfer fluid? This utility provides an easy
way to compare the technical specifications of a range
of fluids.
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F
Financing Made Easy
Directory of financing sites that help you with bankruptcy,
refinancing and second mortgages
Flow
and Level Measurement Glossary
By Omega Engineering.
Fluid Flow
Glossary
By the University of Texas Department of Petroleum and
Geosystems Engineering.
Foil Terminology
Glossary
Foilcenter explains terms specific to foil production
such as luster, tension leveling, strain hardening and
more.
Force Converter
Convert to and from dyne, joules, kilograms, newtons,
pounds, tons, etc.
Fraction Calculator
This calculator tells you where your decimal fraction
stands on the 1/8, 1/16, 1/32, and 1/64 scales.
Free SDOF
System Calculator
This calculator returns the natural frquencies, damping
ratio, and the closedform solution for a SingleDegreeOfFreedom
massspringdamper system.
Frequency &
Wavelength Calculator
Input and output is in Hertz, centimeters and electron
volts.
H
HalfLife Calculator
Calculations involving the exponential deacy of radioactive
materials.
Hardness
Conversion Table
Convert Rockwell, Superficial Rockwell, Brinell, Vickers,
ScleroScope, and Tensile Strength numbers.
Hardness
Converter
This calculator explains and interconverts comomonly
used hardness scales, including Brinell, Knoop, Mohs,
Rockwell, Shore, and Vickers.
Hazardous Chemicals Database
Allows you to retrieve information for any of over 1300
hazardous chemicals based on a keyword search.
Heat
Capacity Conversion Factors
Select units to convert from and to.
Heat
Exchanger Inlet/Outlet Temperature Prediction
This procedure predicts the thermal behavior of a single
heat exchanger or a bank of identical heat exchangers.
Heat Exchanger
Log Mean Temperature Difference
This procedure calculates the Log Mean Temperature Difference
(LMTD) of a heat exchanger in parallel or countercurrent
flow.
Heat
Exchanger Shell Side Pressure Drop
This procedure calculates the shell side pressure drop
of a heat exchanger for both laminar and turbulent flows.
Heat
Exchanger True Temperature Difference
This procedure calculates the corrected Log Mean Temperature
Difference (LMTD) of a single heat exchanger or a bank
of identical heat exchangers connected in series.
Heat
Exchanger Tube Side Pressure Drop
This procedure calculates the tube side pressure drop
of a heat exchanger for both laminar and turbulent flows.
Heat
Flux Conversion Factors
Select units to convert from and to.
Heat
of Combustion of Fuel Gas
For a wide variety of fuels.
Heat
of Combustion of Fuel Oil
This procedure calculates the heat of combustion of a
petroleum or synthetic liquid fuel.
Heat
Tracing System Design
Helpful calculator for basic freeze protection and process
maintenance heat tracing applications.
Heat
Transfer Coefficient Conversion Factors
Select units to convert from and to.
Heat
Transfer Factor
Heat transfer factor is used in heat transfer in general
and free and forced convection calculations in particular.
Heat
Treating Glossary
This glossary currently contains more than 1000 metallurgical
terms.
HRSG Temperature
Profile Calculator
Program evaluates the gas/steam temperature profiles of
single pressure HRSGs in the design mode only.
I
Inductance
Converter
Convert to and from henry and derivatives, emu, and esu
units.
Inspection Penetrant Glossary
By the American Gas & Chemical Co. Ltd.
Insulating
Products Search Engine
NIST Heat Transmission Properties of Insulating and Building
Materials.
Insulation Chart
Waste of fuel per year by heat loss from 1 foot of pipe
(Steam at 100 PSI / Ambient Temp. 60º F.)
Interactive Unit Equivalency
Converter
This utility allows you to convert from one engineering
scale to another.
Interactive Unit
Equivalency Table Generator
This utility allows you to generate an equivalency table
from any engineering unit (milliAmps, for example) to
any other.
InterConversion
of Oil Distillation
Enter percentage distilled and temperature for conversion
to selected units.
International
Thermocouple Color Codes
For thermocouple and extension grade wires.
Internet
Glossary of Pumps
By the Animated Software Company.
JK
L
Language
Converter
Translates from German, Italian, Spanish, Russian, German,
Portugese, and French to English.
Language Translator
Translate English language web pages or text to Spanish,
Portuguese, French, German, or Italian.
LeakTesting Glossary
By the American Gas & Chemical Co. Ltd.
Loan
Calculator
For a given amount, find the monthly payment, interest
rate, or number of payments.
Low Alloy Steels
Database
This database allows you to check the resistance of various
low alloy steels to SCC in various environments.
M
Materials and Corrosion
Database
Database allows you to check the resistance of a specified
material in a specified environment.
MatWeb Materials
Information Resource
A searchable materials information database covering 21,580
materials including metals, plastics, ceramics, and composites.
Metal
Hardness Reference Tables
Various conversion tables of Rockwell and Brinell hardnesses.
Metal
Specifications Cross Reference Utility
Select a specification originator, and the specs you want
to review.
Metal
Temperature by Color
Table of colors and corresponding temperatures.
Metal Weight
Calculator
Enter size and metal type to calculate the weight of many
metals.
Minerals, Mining, and Metallurgy
Browse questions and answers about Minerals, Mining, and Metallurgy
at Smart QandA. Every answer is verified using trusted research
and reference information at Encyclopedia.com!
Mortgage, Loans and Financial
Calculators
These financial calculators can help figure calculations
on mortgages, car loans, home equity loans, CDs, savings,
credit cards, student loans and more. (US based)
O
NIST Thermocouple
Database
NIST reference functions and tables of thermocouple electromotive
force (emf) versus temperature have been adopted as standards
by the ASTM and the IEC.
Nitrogen Loss Chart
Nitrogen leaks cost approximately 10 times more than compressed
air leaks. A chart indicating the high cost of N2 leaks.
NonMetric "Adding Machine"
Adds Feet & Inches, Pounds & Ounces, Quarts &
Cups, etc.
NPT Tap Size Chart
Recommended drill sizes for National Pipe Threads.
Ohm's Law Calculator
Enter two variables to calculate the others.
Online Corrosion
Problem Solver
Provides assistance in the identification of the root
cause of common corrosion problems through information
obtained from simple visual examination of the corroding
components or equipment.
Optimum
Dimensions of a Vessel
This procedure calculates the optimum dimensions of a
cylinderical pressure vessel with a known volume.
Organic Compounds
Database
Provides physical data on a large number of organic compounds,
including molecular weight, melting point, boiling point,
index of refraction and UV absorption peaks.
ORing Data Page
Gives all of the relevant data for standard oring sizes:
OD/ID/crosssection/volume/metric for AS568A uniform
dash numbers
Oval Duct Differential
Pressure Calculator
You input the length of the major and minor axes of the
duct in inches, and the flow rate through the duct in
cubic feet per minute.
Oval Duct Flow Rate Calculator
You input the length of the major and minor axes of the
duct in inches, and the differential pressure across the
duct in WC.
Overall
Heat Transfer Coefficient
This procedure calculates the overall heat transfer coefficient
of a heat exchanger.
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Q
Quadratic Equation Calculator
Algebra calculator for quadratic equations.
R
Radial
ORing Calculator
This calculator outputs the ORing inner diameter and
the range of ORing crosssection diameters that will
meet user prescribed limits on groove and bore diameters
and ORing compression.
Radioactivity
Unit Converter
Convert various units of radioactive measurement.
RadioCalc
Scientific calculator and universal converter for radio
communication and electromagnetic compatibility (EMC).
Reciprocating
Compressor Sizing
This procedure determines the number of compression stages,
discharge temperature, head and both gas and brake horsepower
required per stage for a reciprocating compressor.
Rectangle
Duct Differential Pressure Calculator
You input the length of the two sidesof the duct in inches,
and the flow rate through the duct in cubic feet per minute.
Rectangle Duct Flow Rate
Calculator
You input the length of the two sidesof the duct in inches,
and the differential pressure across the duct in WC.
ResearchIt!
General information search engine interface of many useful
resources.
Resistor
Color Codes
Table of colors, 1st and 2nd significant figures, multipliers,
and tolerances.
Reynolds
Number
Reynolds number is used in momentum, heat, and mass transfer
to account for dynamic similarity.
Reynolds
Number Calculator
This calculator computes the Reynolds Number given the
flow characteristics asked for. It outputs the flow type
you can expect (laminar, transitional, or turbulent) based
on the Reynolds Number result.
Right Triangle Calculator
Any right triangle can be solved for all sides and angles
if you just know two sides or one angle and one side.
S
Salary Calculator
You make your location choices from pulldown menus, then
see how much money you'd need to earn to maintain the
same costofliving level if you were to relocate to your
chosen destination.
Saturated Steam Table
Condensed table of the thermodynamic properties of saturated
steam.
Saturated Steam Tables
Calculator is used to compute the thermodynamic properties
of saturated steam. This calculator uses steam properties
from the 1967 ASME Steam Tables
Scientific Calculator
This is a simple but fairly general numeric expression
evaluator, with a large number of builtin transcendental
functions. It requires a Web browser that supports JavaScript.
Screw
Data Page
Give all of the relevant data for sockethead capscrews,
panhead machine screws and hexhead capscrews. Simulates
the TADtype slidecard.
Search
for an Individual ASTM Standard
Search utility to find the ASTM standard by designation
or listing.
Shell
Side Heat Transfer Coefficient
This procedure calculates the shell side heat transfer
coefficient of a heat exchanger for both laminar and turbulent
flows.
Single
Phase Pressure Drop in Down Flow FixedBed Reactors
This Procedure utilizes the Ergun equation to calculate
the pressure drop in down flow fixedbed reactors. It
applies equally well to gases and liquids.
Single
Phase Pressure Drop in Piping
The pressure drop calculation presented here applies to
Newtonian fluids which are incompressible and single phase
in isothermal and steadystate flow situations.
Solving for 3
Unknowns
Algebra calculator for solving 3 unknowns.
Solving for Two
Unknowns
Algebra calculator for when you have 2 unknowns.
Sonic
Velocity in a Gas
This procedure calculates the sonic velocity in an ideal
gas.
Specific
Heat Converter
Convert to and from all standard units.
Square
Duct Differential Pressure Calculator
You input the length of a side of the duct in inches,
and the flow rate through the duct in cubic feet per minute.
Square Duct Flow Rate
Calculator
You input the length of a side of the duct in inches,
and the differential pressure across the duct in WC.
Standard
Atmosphere Computations
Uses JavaScript to compute properties related to the 1976
standard atmosphere up to 230,000 ft.
Standard
Sieve Sizes
Cross reference of Mesh Size (microns), TYLER, ASTME11,
BS410, and DIN4188.
Standard Tap Size Chart
Gives the recommended drill size for American standard
and ISO metric threads.
Standard Temperature and Pressure
Calculator
Gas volumes are compared at a Standard Temperature of
273.15 Degrees Kelvin and a Pressure of 760 torr.
Steam
Loss Chart
Steam flow through orifices discharging to atmosphere.
Steam Trap Table
Types, operating characteristics, and performance in particular
applications.
Steam Turbine Calculations
Input process variables to calculate exit steam quality,
rate, etc.
Steam Usage
Animation
Shows how steam is used in a cogeneration facility, baghouse,
etc.
Steel Industry Glossary
Comprehensive glossary published by Weirton Steel.
Surface Roughness
A chart showing what surface roughness ranges are typical
for a number of fabrication processes.
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T
Table of Pipe Taper and Straight Thread Dimensions
National Pipe Taper and Straight Thread Dimensions.
Tank Volume
Calculate the volume of liquid in a cylindrical tank.
Orient the tank either vertically or horizontally.
TEMA Heat
Exchanger Designations
Enter designation for front end stationary head type,
shell type, and rear end head type for a picture of the
configuration.
Temperature
Controller Simulation
Enter various parameters and graph the results.
Temperature Sensor
Comparison Guide
Table comparing temperature sensor attributes of thermocouples,
RTDs, and thermistors.
Terminal
Velocity of a Rigid Particle
This procedure calculates the terminal velocity of a single
rigid particle falling in a Newtonian fluid under the
influence of gravity and is applicable to the laminar,
transitional, and turbulent flow regimes.
The Directory of Online
Statistics Sources
This directory lists online statistics sources, by subject,
for quick reference.
The Periodic Table of Elements
Detailed information for all elements, physical properties,
chemical and structural properties, and other data.
The Phase
Diagram Web
A free service of the Georgia Tech Joint Student Chapter
of ASM/TMS showing binary elemental phase diagrams and
links to prediction software and other related sites.
Thermal Conductivity Converter
Thermal conductivity conversion factors.
Thermal
Efficiency of Gas Fired Heaters
This procedure calculates the thermal efficiency of a
gas fired process heater and is based on API recommended
practice 532.
Thermal
Efficiency of Oil Fired Heaters
This procedure calculates the thermal efficiency of an
oil fired process heater and is based on API recommended
practice 532.
Thermal
Expansion (Linear) Conversion Factors
Select units to convert from and to.
Thermal
Expansion (Volume) Conversion Factors
Select units to convert from and to.
Thermal Spray
Technology Glossary
A mixture of generic and popular terminology has been
adopted by the thermal spraying industry.
Time Zone Converter
Find out the time anywhere in the world.
TitaniumZirconium
Alloys Database
This database allows you to check the resistance of various
titaniumzirconium alloys to SCC in various environments.
Tube
Properties
This converter provides easy access to standard tube properties
and characteristics.
Tube
Side Heat Transfer Coefficient
This procedure calculates the tube side heat transfer
coefficient of a heat exchanger for both laminar and turbulent
flows.
Two
Phase Flow Regime Determination
The two phase flow regime determination procedure presented
here applies to steadystate, isothermal two phase pipe
flow of incompressible Newtonian fluids.
Two
Phase Horizontal Flow Regime Map
For use in developing plant piping systems.
Two Phase
Pressure Drop in Piping
The frictional pressure drop calculation presented here
applies to steadystate, isothermal two phase pipe flow
of incompressible Newtonian fluids.
Two
Phase Vertical Flow Regime Map
For use in developing plant piping systems.
Typical
Heat Exchanger Fouling Resistances
For refining applications, natural gas processing, chemical
processing, industrial fluids, and cooling water.
Typical
Overall Heat Transfer Coefficients
For alkylation, amine treating, catalytic cracking, crude
distillation, hydrodesulfurization, light ends processing,
lube & wax processing, naphtha hydrotreating &
reforming, and thermal cracking.
U
Ultimate Ellipse Calculator
Geometry calculator for elipses.
Ultimate Triangle
Calculator
This solves for any type of triangle, and calculates the
area as well.
Ultra Converter 1
Converts Distance, Area, Volume, Mass and Time.
Ultra Converter
2
Converts Velocity, Force, Pressure, Energy and Power.
Unit Conversion Calculator
Featuring more than 800 units in our database (and growing),
we give the unit definition and SIdimensions in addition
to converting from one unit to other units in the same
family.
Unit
Conversions
Over 40 conversions, including flow rates, heat flux,
viscosity, latent heat, specific heat, and more.
Unit Converters
Wide variety of engineering unit conversion calculators.
V
Vector Calculator
This is a simple Java applet intended to give students
a "feel" for vectors in two dimensions. Specifically,
it covers components, magnitude and direction, and vector
addition.
Venturi
Flowmeter Calculator
A fluid passing though smoothly varying constrictions
experience changes in velocity and pressure. These changes
can be used to measure the flowrate of the fluid.
Viscosity Converter
Viscosity (absolute) factor converter.
W
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