Overview
This screed calculator helps you plan cement screed, anhydrite screed, and self-leveling screed. It converts floor area and thickness into volume, then estimates total material weight and the number of bags, including waste.
Use cases
- Estimating screed for new floors and renovations.
- Planning material for underfloor heating screed.
- Checking bag quantities before ordering.
- Comparing cement, anhydrite, and self-leveling screed needs.
How it works
- 1
Enter the floor area in square meters.
- 2
Set the screed thickness in millimeters.
- 3
Provide material consumption or density.
- 4
Add a waste percentage for practical overage.
- 5
Enter the bag weight to calculate bag count.
Examples
Example calculation
Input: Area: 20 m2, thickness: 50 mm, consumption: 2.0 kg/m2/mm, waste: 5%, bag weight: 25 kg
Output: Volume: 1.00 m3, total mix: 2,100 kg, bags: 84.
A practical estimate for a medium room.
Underfloor heating floor
Input: Area: 45 m2, thickness: 60 mm, consumption: 1.8 kg/m2/mm, waste: 7%, bag weight: 25 kg
Output: Volume: 2.70 m3, total mix: 5,106 kg, bags: 205.
Useful for screeds over heating pipes.
FAQ
How is screed volume calculated?
Volume is calculated from area multiplied by thickness converted to meters.
Can I use this for self-leveling compound?
Yes. Enter the product’s consumption or density to estimate the required amount.
Why add waste?
Waste covers spills, uneven subfloors, and small job losses during mixing and application.
Does the calculator work for bagged products?
Yes. Enter the bag weight and it will estimate how many bags you need.