Download Construction Calculator FREE apk 0 free for Android smartphone
Posted by Red Seal Software in Tools  Dec. 30, 2015  43 Comments
Apk file size: 4.3 MB
Your Handyman helper...right on your phone!
Construction Calculator FREE can calculate numeric values, imperial measurements, degrees, rafters, concrete volume, and so much more! All the operations and conversion buttons you could ever need include:
feet to cubic metre
pi radius squared
percent
square root
squared
hypotenuse
reverse hypotenuse
feet
inches
fractions
convert (converts displayed number into feet & inches)
degrees
pitch
span
common rafter
hip/valley rafter
jack rafter
miles to km
km to miles
yards to metres
metres to yards
celsius to fahrenheit
fahrenheit to celsius
litres to gallons
gallons to litres
kilograms to pounds
pounds to kilograms
inches to mm
mm to inches
inches to cm
cm to inches
+/
radian
sin
sin1
cos
cos1
tan
tan1
abs
log
Formula's include:
Basic Stair Calculations
in this section you only need to enter the Total Rise of a stair case, and the ideal Tread Run (length)
The calculator will calculate the rest for you and give you a list of desired information and results.
Basic Roof Calculations
In this section you only need to enter the shortest span of a house and the roofs pitch. Also you can change the default 1 foot overhang. Hitting update will result in:
common rafter length
common rafter birdsmouth
hip/valley length
hip/valley birdsmouth
1st jack rafter
Total Rise
Total Run
*Details about how to calculate common rafters can be seen if selected
Basic Concrete Calculations
This section is broken into two sub categories:
Cylinder calculations or Square/Rectangle calculations
You input the length width and height for rectangles in feet and hit update for a result in both cubic metres and cubic yards. Altering the numbers then hitting update again without hitting clear first will add the new total to the current total. This is for rapid adding of area to determine concrete volumes.
In the event you do not know the value in feet, there is tiny mm and inches buttons beside each input boxes. You can input 1 value in mm and hit the mm button to instantly convert it to feet for you, while placing another value in inches and hitting the inch button to convert to total feet in decimal format.
This program will allow the entry of feet, inch, and mm and convert it all to be feet in decimal format to solve the equations into both cubic metres and cubic yards.
OHM's Law: Input any two of the Power/Watts, Resistance/OHM's, Current/AMPS, or Voltage to result in the other two required information. Quick and Simple!
Wall Finishes (5 subs)
Paint Calculator
Brick/Block Calculator
Siding Calculator
Framing Wall Stud Calculator
Drywall/Gypsum Board Calculator
Board Feet & Cost calculator
Input Length, Nominal Width, and Nominal thickness to determine how much board feet you have or need. Also input the quantity you need and price per BF to figure out the total costs or required material!
Bubble Level
345 Calculator  helps figure out what the hypotenuse would be of X and Y measurements to determine if you are 90 degree square or not on any given project.
Fractions button: This is an entirely new calculator as a sub menu. This is strictly for adding, subtracting, multiplying or dividing fractions and whole numbers. There is a show/hide decimal button to convert your answer into decimal.
.support: [email protected]
* Upgrade today for an AdFree experience, follow this link to upgrade: https://play.google.com/store/apps/details?id=appinventor.ai_SleddLine.ConstructionCalculatorPRO
Whats new

Update: Removed the top banner ad that shows above the display. Banners reduced from top and bottom to just the bottom.
Red Seal Software part of our Tools and have average installs from 100000 to 500000. Last Update Dec. 30, 2015. Google play rating is 73.622. Current verison is 0. Actual size 4.3 MB.
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43 Comments
Brian Brown
Bad Arguments This app seems pretty easy to use but whenever you do not use the calculator correctly you receive an error that says Bad Arguments and it kicks you out of the App.
Daniel baez
Pretty good I like it Downloaded it because I seen that the developers responded to the comments and so far the app works great simple easy to use just plain works
Zackery Breeland
This app is absolutely garbage, even for a free app. If any error occurs in your calculation you have to exit out of the app. The input is horrible and if you're hoping to use this with any trig functions, good luck. It does not let you switch out of degrees once you get into it unless you clear our your equation.
Hector Robles
Not bad. Only thing from me giving it a 5 is that theres no delete button. To just delete number by number instead of clearing out the calculator.
Dave Krauskopf
Calculations for cylinders are way off.
Gerson Rodrigues
Horrible Calculations are way off, don't waste ur time.
James Morris
Trash Cant add 32nd calculations
Alan Corr
To many pop up adds The app is great the pop up adds make it it impossible to use the app .I am going to delete it . My advice don't brown load big east of time
David Pereira
Just as the title says..... Works well :)
Paul Conant Jr
It works. Gives u the answers you need if you input the necessary fields
brian harper
No pop up adds?? Buttons too small, can't see the answer line fully. I'll buy the CMPro!!
Mike Bell
Ad after ad. To many ads pop up. Not worth time deleting all the pop ups!
rizz monster
would you like a calculator with those ads? dude I like the concept but I'm not even gonna bother when I get bombarded every time I need to convert 3/64 to a decimal. add a donate button. strip down to one small banner ad at the bottom. you will make more money and everyone will love you.
Ty Swanson
Interface needs work Too flashy. Needs simple and larger buttons.
Bill Walton
Doesn't work Can't get past the ads
Jesse Palmer
Can't use it for adds. Would like to before purchasing
richie suchorabski
This can sucks Tried using this and it sucks
Anwer Sha
Very helpful Iam a draftsman.this software really helpful for me..thanks
Joseph Crawford
Great app Tried other calculator's to get area feet and inches; they didn't work. This one did. Keep it up
Jim Lodge
App needs location? Also don't have / symbol App is crappy and full of adds and the screen shifts all the time to accommodate for more ads and messes up your calculations. Download the Handyman construction calculator instead.
Chad Levanger
Terrible Bad not quick and easy to use like should be, would rather pay for an app versus use this one.
Joseph Borders
Great I enjoy using this app keep up the great work!
Alonzo Rodatre
Looking for it awhile Nice going and profisional
Jonathan Wood
Interesting math 5/8 x 2 = 1/4? 1/3 x 2 = 11/16? Doesn't matter how fast or convenient a calculator is if it's wrong. Edit: added stars for quick response from dev offering solution.
Kenneth Berndt
I fear that even if I paid for the ad free version that it still would be too frustrating to use on a job site.. Dear developer. I see the "single banner ad" but I am getting full screen pop ups for one of two reasons. 1) the screen keeps shifting up to to force you to see it which causes one to select it when you finger is reaching for a button on the bottom of the screen. 2) it just has pop up ads as well. I appreciate you responding to poor reviews. But don't make some snarky comment that people won't be happy with free. Some people are just not happy with poor usability. Spend some time on that and on how an actual contractor would use it on a job site.
nicholas kirby
Layout sucks. Not as smooth as a real project calculator
Brian Briggs
App sucks Freezes all the time and has to restart. Dont download
David LaRoche
I couldn't take feet and inches and multiply them! Like 6'8''x3 sorry I deleted the app
d petersen
Disappointed It did not seem to work with what I thought were basic, simple calculations using feet, inches and fractions
Jay Otis
Didn't work My first rate and comment Was for a different app with the exact same name... I liked how the dev response to my comment (but didn't understand the virus comes from tapping the ad not the app... whatever)so I installed to try it out. 5" 1/8 x 1.4 either equals 0 if I didn't press x/xinches after 8 or if I did press it I got a bad argument error and crash. Also, the app screen jumps so instead of pressing equals you tap an ad... but with an ad free version available i guess the point is moot.
F. Stoeber
Calculator doesn't perform simple division. When I first tested it I used it for addition of one length and another length and that seemed to work. However, division of a length by a number does NOT work at all. When I enter 16ft divided by 3, the calculator puts out "bad argument to <= The operation <= cannot accept the arguments: 0 " This is about as basic of an operation as possible, so it leaves me with no confidence in this app. Additionally, when you first start the app, after a few seconds, in mid entry, the screen will suddenly shift downward so that you mistype. Since there is NO backspace button to undo the last entry, this means that you have start all over again. Very frustrating and hardly makes it good for any quick calculations.
Kristi Ward
Awesome Sauce My dad has a calculator very close to this but would never let me use it since he has had it from when he started drafting in his teens. I have never been able to get one since it is so expensive. But now I have it for free!!! Thank you so much for developing this app!!!!
Cory Flynn
An annoying joke. The advertisement keeps on moving the entire screen, making you hit the wrong numbers. Too difficult to learn, unless you already have past experiences.
Daniel Germann
Good app but adds keep popping up and I can't finde out how to upgrade (as advertised on the top of the app)
Raymond MacKenzie
This app is garbage
Jason McQueen
Doesn't all fit on the screen The ads push the result up past the top of the screen? What could be more annoying?
Puppy Dog
Can't do basic math. Try 4' ÷ 4 and you get an error. This app is garbage.
Ramon McDonald
Pop ups The pop up move the keys around. In the middle of working a problem I would hit the wrong number and have to start over. Very frustrating
Ian Sweep
Frustrating To it's credit, everything works great. The problem (beyond the ads) is the effort involved in finding simple answers. In order to use the formulas, everything is entered as decimals; not feet/inches. The issue is you'll need to find these before using the formulas. Example: to use a precut stud at 92 5/8", you have to enter [92 'inch' 5 'x/x in' 8 'x/x in' '+' '='] to get 7.71875. Write that down or it won't be saved. Once you have all the numbers it works well, it's just not as intuitive as it could be.
Flia Pereavil
DO NOT DOWNLOAD IT It doesnt work and downloads bugs to you cell phone cousing slowness....
Jeff Howard
Can't do simple division. The app is unable to do simple division.
John Gray
Doesn't work At all. Utterly useless.
Colby Barker
Works ok... But, while I understand why there are ads, it would be nice if it didn't keep going back to the ad at the bottom while I'm trying to type so I can't even see the numbers I put in. Pretty useless if the ads take up the screen and can't see the calculator.