Construction/ CALCULATOR

Floor screed volume and bag estimate

Convert measured floor area and average screed thickness into volume and bags using the product’s declared yield.

Floor lengthmMeasure the area covered by this screed specification.

Floor widthmSplit irregular floors into rectangles and add them separately when needed.

Excluded full-depth aream²Subtract only areas that receive none of this screed layer.

Average screed thicknessmmUse levels or survey points; the thinnest point must still meet the system requirement.

Placement allowance%Allowance for level variation and handling, not permission to exceed structural loads.

Declared mixed yield per bagL/bagUse the current product data for the exact bag size and water addition.

Net screed area

38.00 m²

Net geometric volume

1.90 m³

Volume including allowance

2.05 m³

Estimated whole bags

172 bags

A rectangular area with one average thickness and the entered product yield. Falls, local hollows, pipes, reinforcement, movement joints, mixing losses, batch limits, substrate preparation, structural load and minimum or maximum product thickness are excluded.

FROM ESTIMATE TO ACTION

Use the result, not just the number.

Verify the inputs

Measure or document each input. If a value is only an estimate, record its source and test a conservative alternative.

Keep the calculation traceable

Save the input link or copied result together with the date, units and assumptions. A number without its inputs cannot be checked later.

Confirm the decision

Compare the estimate with the related guide, current product data and requirements that apply at your location before buying or building.

Inputs to verify

Floor length (m): Measure the area covered by this screed specification.
Floor width (m): Split irregular floors into rectangles and add them separately when needed.
Excluded full-depth area (m²): Subtract only areas that receive none of this screed layer.
Average screed thickness (mm): Use levels or survey points; the thinnest point must still meet the system requirement.
Placement allowance (%): Allowance for level variation and handling, not permission to exceed structural loads.
Declared mixed yield per bag (L/bag): Use the current product data for the exact bag size and water addition.

Continue your calculation

Construction

Masonry unit quantity

Estimate blocks or bricks from net wall area, unit face size, joint thickness and an explicit allowance.