1. Measure net area
Break the project into rectangles. For countertops, measure each run and island separately.
أداة تخطيط المشروع
قدّر مساحة المشروع ونسبة الهدر المسموح بها وكمية الألواح التقريبية قبل إعداد طلب عرض أسعار الحجر المتكلس.
Calculator input
Enter either a total surface area or build the area from individual rectangles. The estimate updates automatically.
Use these controls when the project needs a special thickness, custom slab size, or extra layout allowance.
Optional project requirements
How to use the result
Break the project into rectangles. For countertops, measure each run and island separately.
Cutouts, vein direction, and bookmatch layouts usually need more allowance.
Final ordering should consider faces, pattern direction, edges, crates, and shop drawings.
Reference table
| Project type | Starting allowance | Why it changes |
|---|---|---|
| Simple wall or furniture panels | 5-10% | Low cut complexity, fewer openings, flexible layout direction. |
| Kitchen countertop or island | 10-15% | Sink and hob cutouts, seams, overhangs, edge details, and transport risk. |
| Bathroom / shower walls | 10-15% | Niches, plumbing openings, corner returns, and matched wall elevations. |
| Facade or directional pattern | 15-20% | Large elevations, strict alignment, anchors, corners, and replacement reserve. |
RFQ preparation visual

FAQ
Calculate net project area, add a waste allowance, divide by one slab area, and round up.
No. It is for early RFQ planning. Final ordering should be checked against drawings, cutting layout, slab orientation, edge details, and packing requirements.
Large-format slabs lose material through trimming, cutouts, corners, breakage reserve, pattern matching, and direction control.
Sometimes, depending on countertop dimensions, slab size, openings, seam tolerance, transport limits, and pattern direction.