Home & Construction
Self-Leveling Compound Calculator
Updated Aug 25, 2026 Reviewed Aug 25, 2026
Estimate self-leveling underlayment volume, whole bags, primer and cost for uniform or sloped fill depths across multiple areas.
Floor-leveling material takeoff
Enter floor areas, fill depth and product yield
Result
Calculation summary
Enter values to see the result
Your result, breakdown, assumptions, and warnings will appear here.
Layer preview
Floor plane and leveling layer
Net floor area
20 m²
Average thickness
6 mm
Whole packages
10
How to use this calculator
- 1Add the floor areas and subtract exclusions.
- 2Choose uniform depth or enter minimum and maximum depths for a planar slope.
- 3Enter product coverage at its stated reference thickness.
- 4Set waste, primer coverage and optional prices.
Formula
Volume = net area × average thickness
For a planar sloped layer, average thickness is the mean of entered minimum and maximum values.
Calculation steps
- Combine areas and subtract exclusions.
- Convert entered depth to average thickness.
- Calculate net and waste-adjusted volumes.
- Derive package yield from coverage at reference thickness.
- Round packages and primer containers upward.
Worked example
A 20 m² floor at 6 mm has a net material volume of 0.12 m³, or 120 L, before waste.
Assumptions
- Sloped mode represents one planar, evenly changing thickness.
- Product yield comes from the current technical data sheet.
- Surface profile and porosity can reduce actual coverage.
- Whole packages and primer containers are rounded up.
- Substrate suitability, maximum lift and curing are outside scope.
Sources
Frequently asked questions
How is a sloped floor calculated?
The mean of minimum and maximum thickness is used for a uniformly changing plane.
Where do I find package coverage?
Use the product technical data sheet and enter coverage area plus reference thickness.
Is primer included?
It is optional and calculated from separately entered container coverage.
Can it design the finished elevation?
No. It estimates material after required thicknesses are entered.
Does it check maximum pour thickness?
No. Confirm lift limits with the manufacturer.
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