The Cost of Paint Needed for a Wall calculator computes the cost of paint or primer needed to cover an interior wall.
INSTRUCTIONS: Choose units and enter the following:
- (L) Length of Wall
- (H) Height of Wall
- (uP) Price of one gallon of paint or primer (see Unit Price below).
- (PC) Coverage per Gallon (area covered per gallon)
- (CT) Coats of Paint
Total Cost (TC): The calculator computes the number of gallons of paint needed for the wall and uses volume to compute the total cost in U.S. dollars. However, this can be automatically converted into other currency units via the pull-down menu.
The Math
The mean square feet of coverage for a gallon of quality paint is 400 ft2. Note: The minimum number of gallons for this calculator is one gallon. The formula for the total cost to paint a wall is:
TC = (L*H)/400 ft2 * uP
where:
- TC = Total Cost to Paint a Wall
- L = Length of Wall
- H = Height of Wall
- uP = Unit Price of Paint
Unit Price of Paint
One should use the pricing for paint or primer that can be bought locally since prices may vary. However, the following prices are recent U.S. dollar costs for different price ranges of one gallon of paint and primer in the United States.
Paint Calculators:
- Paint for a Room: computes the number of gallons of paint or primer needed to paint an entire room, the four walls and ceiling and also for just the walls.
- Paint for a Wall: computes the number of gallons of paint or primer needed to paint a wall or any rectangular area (wall or ceiling).
- Exterior Paint for a House: computes the number of gallons of exterior paint for a gabled building like a common house.
- Cost to Paint or Primer a Room: (CLICK HERE)
- Cost to Paint a Wall: (CLICK HERE)
- Cost to paint or prime a ceiling: CLICK HERE
- Paint Pricing Survey
Paint Pricing Survey Data
One should use the pricing for paint or primer that can be bought locally since prices may vary. However, the following prices are recent U.S. dollar costs for one gallon of paint or primer in the United States:
- Paint Pricing Survey date: 7/29/22
- Paint Price Survey Source (online): HomeDepot
- Price of premium (high quality) paint: $61.94 USD
- Price of medium grade paint: $48.98 USD
- Price of economy paint: $26.98 USD
- Price of primer: $19.98 USD