Marble and Granite Calculator
Calculate m² and weight for natural stone floors.
The Marble and Granite Calculator is a free tool designed for construction professionals and enthusiasts. Calculate m² and weight for natural stone floors. Instantly get the required materials broken down by purchase units, with an option to add a wastage allowance so you never run short on site.
Inputs
Result
Result
How to Use This Calculator
- Measure the length and width of the surface to be tiled in meters.
- Select or enter the tile/piece size.
- Enter the grout joint width (typical: 2–5 mm indoors, 5–10 mm outdoors).
- Add wastage: 10 % for diagonal layout, 5 % for straight layout.
- Click 'Calculate' to get piece count, adhesive and grout needed.
Frequently Asked Questions
Diagonal installation creates more cuts and offcuts at the edges. 10 % is the minimum recommended; for complex patterns consider up to 15 %.
It depends on the adhesive and tile size. For small tiles (< 30 × 30 cm) use 2–4 kg/m²; for large formats (60 × 60 cm or more) you need 5–8 kg/m².
For smooth interior floors, apply a 3–5 mm layer. For exterior or uneven surfaces, up to 10 mm with tile adhesive mortar.