How to use it
- Enter the floor area in square metres.
- Enter the desired thickness in millimetres.
- Provide the compound density (default 2100 kg/m³) and bag weight (default 25 kg).
- Read the total weight and required bag count instantly.
The Levelling Compound Calculator tells you exactly how much material you must order before you start a screed or floor‑leveling job. You input the floor area (m²), the thickness (mm) you plan to spread, the density (kg/m³) of the mix (standard 2100 kg/m³), and the bag weight (kg) (standard 25 kg). The tool multiplies area by thickness (converted to metres) to get volume, then applies the density to give total weight. Finally it divides by the bag weight and rounds up, so you know the minimum whole bags to purchase. Knowing the weight helps with transport planning, while the bag count prevents short‑falls on site.
Result example: 20 m² × 10 mm → 420 kg → 17 bags.
Pro tips
- Add 5‑10% extra for spillage and compaction loss.
- Round up the bag count; you can’t buy a fraction of a bag.
- Order bags early to avoid project delays.
- Double‑check that the density matches the product label; some mixes vary.
Real-life examples
- A DIY homeowner preparing a 12 m² bathroom floor with a 12 mm screed.
- A contractor estimating material for a 150 m² commercial showroom renovation.
- A flooring installer needing to order the right number of bags for a 30 m² retail space.
Case study
John, a small‑business contractor, entered a 45 m² area and 15 mm thickness. The calculator showed 1,420 kg and 57 bags, letting him order precisely and finish the job on schedule without extra trips.