Floor Screed Calculator
Estimate floor-screed volume and bag quantity from room dimensions, screed thickness, waste allowance and editable product yield.
Default project preview
83 bags
Floor area
300 ft²
Base volume
37.5 ft³
Order volume
41.25 ft³
Purchased yield
41.5 ft³
Calculator
Build the material order
Your order will appear here
Enter the project details and calculate a rounded material estimate.
Input and output guide
What each value means
The labels and units below are part of this calculator’s visible methodology. Replace every default with measurements or product data from the actual project.
Floor length
Enter this project assumption in ft. The current imperial default is 20 ft.
Floor width
Enter this project assumption in ft. The current imperial default is 15 ft.
Average screed thickness
Enter this project assumption in in. The current imperial default is 1.5 in.
Waste and level allowance
Enter this project assumption in %. The current imperial default is 10 %. Minimum: 0. Maximum: 40.
Mixed yield per bag
Enter this project assumption in ft³. The current imperial default is 0.5 ft³.
Price per bag
Enter this project assumption in per bag. The current imperial default is 12 per bag. Minimum: 0.
How to read the outputs
Floor area
length × width. Default preview: 300 ft².
Base volume
before waste and leveling. Default preview: 37.5 ft³.
Order volume
10% allowance. Default preview: 41.25 ft³.
Purchased yield
rounded bag quantity. Default preview: 41.5 ft³.
Unused yield
after bag rounding. Default preview: 0.25 ft³.
Material allowance
bags × entered price. Default preview: $996.00.
Methodology
Transparent calculation
BuildMeter converts every input to a consistent internal unit, applies the selected allowance, and rounds products up to whole purchasable units.
Base volume = floor length × floor width × average thickness. Waste is added, then bags = round up (order volume ÷ mixed yield per bag).
FAQ
Floor Screed Calculator questions
Is floor screed the same as self-leveling compound?+
No. Screed is generally installed thicker and uses a different mix and placement method than many self-leveling products.
Why use average thickness?+
Existing floors are often uneven. The average placed thickness gives a better volume estimate than the minimum depth alone.
Where can I find bag yield?+
Use the mixed-volume yield stated by the manufacturer for the exact product and water ratio.