Wall Paint Quantity And Cost Calculator

This calculator requires the use of Javascript enabled and capable browsers. Though it does intensive math calculations, it is a close estimator and enables the user to approximate the amount of paint required for a given wall, based on parameters entered. THIS IS A COMPLEX CALCULATOR! Pay close attention to the instructions and options. It calculates the square footage of surfaces requiring paint, less that area occupied by doors or windows. It assumes the average door is 21 square feet in surface and the average window is 16 square feet. If your doors and windows are smaller than that or larger than that, you may use fractions such as 1.5 or .8 in the doors or windows field. It assumes that application paint goes on at about 350 square feet per gallon and 330 square feet for base paint; you may change either or both if you wish. It also assumes walls are smooth but allows for standard texturing or heavy texturing. It takes into consideration spraying, which takes slightly more paint than the alternatives, brushing or rolling, either of which requires roughly the same quantity of paint but less than spraying. It considers one or two application coats and assumes no base coat. The algorithm for the base coat is slightly different based (no pun intended) on the different composition of base coat paint; it also allows for a different price. NOTE: The square footage of the wall is based on the actual measurements. All other square footage reporting is CALCULATED based on the actual wall size and the perceived rate of paint coverage determined by coverage options selected.

If you wish to use a base coat of a different type of paint, check the base coat box. If you are in an exceptionally arid or desert environment, creating a very dry condition 80 percent of the year, check the dry climate box. Enter the cost of the paint per gallon for the application and for the base coat, if used; the total prices of the paints required are calculated. You may also enter labor cost per hour and the estimated number of hours; or your may enter 1 hour and the prices estimate for the labor for the entire job. To do another, click the Clear Values button and then enter a new set of values. You may also wish to just change certain fields and recalculate; however, remember that you MUST click Calculate after each modification or group of modifications prior to seeing the corrected final values. Calculated accuracy of current Javascript enabled browsers is generally 16 places. This calculator does NOT take into consideration trim surfaces as being separate. Be aware that the wall square footage does NOT include other walls, unless those walls have the same measurement. You can then change the number of walls from 1 to however many there are. The paintable square footage includes the number of identical walls designated, assuming that they are identical, less doors and windows, and has the selected options of coats and other increases or decreases in paint quantity on it. It is actually the amount of calculated square feet for all of the conditions and determines the amount of gallons required.

You may also be insterested in our Room Paint Quantity Calculator.

Wall Design
Wall Height	Feet
Wall Length	Feet
Number Of Doors
Number Of Windows
Number Of walls (of same dimensions)
Anticipated Paint Coverage
Application Coat Coverage Square Feet	Per Gallon
Base Coat Coverage Square Feet	Per Gallon
Applications Method
Spray
Brush Or Roll
Number Of Applications
One
Two
Include No Base Coat
Include 1 Base Coat
Costs Involved
Application Paint Cost	$ Per Gallon
Base Paint Cost	$ Per Gallon
Paint Labor Hourly Cost	$ Per Hour
Paint Labor Estimated Time	# Hours
Wall Details
Include Textured Walls
Include Heavy Textured Walls
Check Both Wall Boxes If Exceptionally Dry
Very Arid Or Desert Climate

Calculated Results
Basic Wall Square Footage
Basic Wall Paintable Square Footage
Square Footages Below Are Calculated By Typical Options For Paint Coverage And Depict The NORMAL Square Footage That The Paint Volume SHOULD Cover It Is NORMAL For Those Calculations To Reach 3 Times The Base Square Footage
Rounded Application Paintable Square Footage
Rounded Base Paintable Square Footage
Calculated Application Paintable Square Footage
Calculated Base Paintable Square Footage
Approximate Gallons Of Application Paint To Purchase
Approximate Gallons Of Base Paint To Purchase
Calculated Gallons Of Application Paint Required
Calculated Gallons Of Base Paint Required
Calculated Expense Of Application Paint Required	$
Calculated Expense Of Base Paint Required	$
Calculated Expense Of All Paint Required	$
Calculated Expense Of Labor Required	$
Calculated Total Expense Of This Wall Or Walls	$

Updated: 10/18/11

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