Calchemy on iPhone!

Finally, a revolutionary new calculator that “understands” units of measure! Calchemy is the combination of a units conversion engine and a scientific calculator that greatly simplifies real-world problem solving.

With Calchemy you get the answers to your real-world calculations in the units you want, without ever having to look up or enter a conversion factor. Just enter the numbers into a calculation along with their units of measure, Calchemy does all the necessary unit conversions for you automatically when it solves the equation. It also makes sure sure your equation is dimensionally correct.

Calchemy makes getting correct results so simple, you might find yourself calculating just for fun!

One of the most frustrating elements of real-world calculations is that units conversions are often required to get the data you have into a form that is compatible with a known physical relationship. This is a result of the widespread use of so-called "practical units" that are prevalent in almost every field of technology. With Calchemy the units are carried through calculations with conversions applied as required to deliver the answer in the units you specify. In fact, quite remarkably, in many cases a math-magical technique built into Calchemy called "Solve By Dimensional Analysis" can even derive the algebraic equation relating the parameters for you!

Calchemy is great for solving problems that deal with energy, renewable resources, power, pressure, volume, area, force, speed, distance etc. Calchemy “understands” hundreds of units of measure and many physical properties, so you can focus on the problem and not be distracted by conversions. From basic unit conversions, to complex calculations, Calchemy does them in "one line"!

Take a look at the examples below and then give Calchemy a try for yourself, you won't be disappointed, real-world problem solving has never been so easy!

For a detailed example, let's suppose we want to compute the length, on a side, of a square 10 acre parcel of land...  And we want the result in feet. To start out, we know we have to take the square root of 10 acres...  We begin by telling Calchemy to take the square root of 10 of something... We are building an equation in the equation line:

We then tap the "Select" button (The one with the binoculars) to use the "unit select picker" to find all of the units of area known to Calchemy...  We select "acre":

Just to be sure, we can ask Calchemy to give us the details on the unit by taping on the "i" button. We see "acre" is a unit of land measure:

We click on "Done" to return to the main screen and then enter the unit in the equation line by tapping the red checkmark button. Now we add a "?" to the equation using the button on the screen.  The "?" separates the expression we want to evaluate from the unit of measure that we want the result expressed in.

We want our result expressed in feet, so we then search for the unit "foot" by name, entering in the first two characters and clicking the "Search" button (again the one with the binoculars), this time to use the "unit search picker", to find all of the units known to Calchemy that begin with "fo"

We select the unit "foot" and we have a complete equation. We tap the "=" button on the screen and we are done. We see that a square of 10 acres is 660 feet on a side.

Here are some more examples of problems you can solve with Calchemy:

What is 10 kilometers per liter in miles per gallon?
10 km/l ? mpg
= 23.5215 mpg
What is the area of a strip garden that is 35 feet wide and 20 meters long?
35 ft * 20 meters ? acres
= 0.0527224 acres
What is the length of the sides of a square 3 acre garden?
sqrt(3acres) ? ft
= 361.497 ft
What is the radius of a balloon that holds one gallon of water?
( 3 / (4 pi) * 1 gal )^(1/3)  ? inches
= 3.80634 inches
How long should I leave my lawn sprinkler running?
(50 ft * 30 ft * 0.75 inches/week) / (5 gal/min) ? hours/week
= 2.33766 hours/week
How long will it take to get hot water from a water heater to the faucet through 160 ft of half inch (id) tubing with a flow rate of 5 gallons per minute?
pi * (0.25 inch)^2 ; 160 ft ; 5 gal/min ? sec
= 19.5839 sec
How long will it take for my hot water heater to fully recover after the shower goes cold?
40 gal ; 120 degF – 45 degF ; hsv_water ; 40000 btu/hr ? min
= 37.5542 min
What is the equivalent “charging power” when I fill up the gas tank on my car (in 2 min and 20 seconds)?
20 gal ; 2 min + 20 sec ; hcv_gasoline ? megawatts
= 17.4872 megawatts
OK, last one; Using Calchemy (and statistics from the web), I calculate that at the current rate of world fossil fuel consumption the volume of CO2 gas added to the atmosphere each year is a layer one half inch thick covering the whole earth (at sea level). So after 120 years of consumption it would be up to my nose... Um, how long have we been burning fossil fuels?

Get Calchemy for your iPhone or iPod Touch at the App Store. Do it NOW before they run out ;-)
And have FUN calculating!


Calchemy Software Inc.
Fort Collins, CO

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Last Updated 6/21/09
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