| Following
is a list of freeware that provides tools for unit conversion and engineering calculations. To
learn more about a particular item, click on the item name. To
download a software product or visit an interactive web site,
click on "download" or "view," respectively.
But first, please read our disclaimer and
permissions page if you haven't already done so.
%sufur per MMBTu
By Evomarkets LLC. Convert sulfur % in coal to lbs of SO2. (No cost, but you must register to obtain access)
visit
Acceleration Units Converter
By The JavaScript Source. Use this online calculator to convert from one acceleration unit to another, including cm/sec/sec, ft/hr/sec, knots/sec, and others.
visit
AQI Calculator: AQI to Concentration
By US Environmental Protection Agency, Office of Air Quality Planning and Standards (OAQPS). Select a criteria pollutant and enter the Air Quality Index (AQI); the associated pollutant concentration and health information are indicated.
visit
AQI Calculator: Concentration to AQI
By US Environmental Protection Agency, Office of Air Quality Planning and Standards (OAQPS). Select a criteria pollutant and enter the pollutant concentration in the specified units; the Air Quality Index and associated information are calculated.
visit
Area Units Converter
By The JavaScript Source. Use this online calculator to convert from one unit of area to another, including square feet, square meters, acres, rods, square miles, and others.
visit
Atmospheric Properties Calculator
By The JavaScript Source. Input altitude, speed, and reference length and this online calculator will estimate temperature, density, pressure, speed of sound, viscosity, Reynolds Number, and more.
visit
Basis converter (coal)
By Evomarkets LLC. Converts coal values between as-received, dry and air-dried bases. (No cost, but you must register to obtain access)
visit
Calculation of fouling and slagging factors
By Evomarkets LLC. Calculates fouling and slagging factors for coal. (No cost, but you must register to obtain access)
visit
CONCOR
By US Environmental Protection Agency, Office of Air Quality Planning and Standards (OAQPS). CONCOR is a program for converting latitude/longitude coordinates to UTM or UTM coordinates to latitude/longitude.
download
Cost of Coal on a Cents-per-Million-BTU Basis
By Evomarkets LLC. Find ¢/mm BTU using delivered price and BTU/lb. (No cost, but you must register to obtain access)
visit
Darcy Flux & Groundwater Velocity Calculator
By GroundwaterSoftware.com. A free, online tool to calculate Darcy's Law and average groundwater velocity.
visit
Delivered Price on a $/Ton Basis
By Evomarkets LLC. Find delivered price of coal using ¢/mm BTU and BTU/lb. (No cost, but you must register to obtain access)
visit
Energy Content in a Ton of Coal
By Evomarkets LLC. Find mm BTU/ton of coal using BTU/lb. (No cost, but you must register to obtain access)
visit
Energy Unit Converter
By The JavaScript Source. Use this online calculator to convert from one unit of energy to another, including Joules, Kg-meters, ft-lbs, Kw-hrs, Kcal, Btus, and more.
visit
Energy Units Converter
By Evomarkets LLC. Convert values between Kcal/kg of coal to BTU/lb. (No cost, but you must register to obtain access)
visit
Engineering Statistics Handbook
By National Institute of Standards and Technology. Details numerous methods to help scientists and engineers incorporate statistical methods in their work.
visit
Global Warming Potential Converter
By Evomarkets LLC. Converts volumes of all the greenhouse gases into "CO2E" - the equivalent volume of CO2 reductions based on the global warming potential of these gases as established by the International Panel on Climate Change (IPCC). (No cost, but you must register to obtain access)
visit
Guide to Available Mathematical Software
By National Institute of Standards and Technology. Studies techniques to provide scientists and engineers with improved access to reusable computer software components which are available to them for use in mathematical modeling and statistical analysis. It provides centralized access to such items as abstracts, documentation, and source code of software modules that it catalogs.
visit
Length Units Converter
By The JavaScript Source. Use this online calculator to convert from one unit of length to another, including feet, meters, inches, miles, kilometers, chains, and others.
visit
Linear Interpolation Calculator
By GroundwaterSoftware.com. A free, online tool to perform linear interpolation calculations. Linear interpolation determines, from two points (x1,y1) and (x2,y2), what the value of y is at a different point x3.
visit
OnSite OnLine Tools for Site Assessment
By US Environmental Protection Agency, Office of Research and Development. The OnSite set of online tools for site assessment contains calculators for formulas, models, unit conversion factors and scientific demonstrations to assess the impacts from ground water contaminants.
visit
Pressure Units Converter
By The JavaScript Source. Use this online calculator to convert from one unit of pressure to another, including lbs/sq inch, atmospheres, inches Hg, inches H2O, and others.
visit
Radioactive Decay Calculator
By The JavaScript Source. If you know the rate of decay (radioactive decay or biodegradation half-life), you can select a period of time and this online calculator will estimate the amount, or percentage of the original that remains.
visit
SO2 lbs/mm BTU
By Evomarkets LLC. Convert lbs of SO2 to % sulfur in coal. (No cost, but you must register to obtain access)
visit
Tons Converter
By Evomarkets LLC. Convert quantity and value of coal on a mt-vs-nt basis. (No cost, but you must register to obtain access)
visit
Tons Emissions Converter
By Evomarkets LLC. Converts volumes of emissions from short tons, long tons and metric tons and from lbs to kg. (No cost, but you must register to obtain access)
visit
Value of SO2 Differential Between Two Coals
By Evomarkets LLC. Find the $/ton differential between two coals based on the spot SO2 emission price. (No cost, but you must register to obtain access)
visit
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