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Calcimator

Stain & Sealer Coverage Calculator

Calculate stain or sealer quantities based on surface type, porosity, and number of coats with time and cost estimates.

Inputs

sq ft
sq ft/gal

Results

Gallons Needed

4 gal

≈ 4 milk jugs

Total Project Time

6 hrs

Estimated Material Cost

$140.00

≈ 9 movie tickets

Application Time4 hrs
Dry Time Between Coats2 hrs
How to Use This Calculator
  1. Enter the total surface area (sq ft) to be stained or sealed.
  2. Select the surface type (Smooth Wood, Rough-Sawn, or Concrete/Masonry).
  3. Set porosity level (1–3) and number of coats you plan to apply.
  4. Confirm the base coverage per gallon from your product label.
  5. Review Gallons Needed, Application Time, Dry Time Between Coats, and Total Cost.

How the result changes with Surface Area

Surface AreaGallons NeededTotal Project TimeEstimated Material Cost
5,00039 gal52 hrs$1,365.00
17,500135 gal177 hrs$4,725.00
32,500250 gal327 hrs$8,750.00
45,000345 gal452 hrs$12,075.00

What each input means

Surface Area
Total area to be stained or sealed.
Surface Type
Surface texture affects absorption and coverage rate.
Porosity Level
1 = low (sealed/hardwood), 2 = medium (softwood), 3 = high (cedar/redwood).
Number of Coats
Recommended 2 coats for best protection and color depth.
Base Coverage
Manufacturer-rated coverage on smooth surfaces.

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Surface Area = 400, Surface Type = 1, Porosity Level = 2, Number of Coats = 2 = 5 input(s) provided
  2. Calculate Gallons Needed
    Gallons Needed
    4 = 4
  3. Calculate Total Project Time
    Total Project Time
    6 = 6
  4. Calculate Estimated Material Cost
    Estimated Material Cost
    140 = $140
  5. Calculate Application Time
    Application Time
    4 = 4
  6. Calculate Dry Time Between Coats
    Dry Time Between Coats
    2 = 2

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