Quality Inspector
Tiles & Flooring
Stone Calculator (2026) – Granite, Marble & Stairs Estimator
Expert Guide
Calculate key metrics for heavy natural stones (Granite, Marble, Kota). Combines slab weight, floor cost BOQ, and staircase tread estimation.
⚡ Quick Answer
Granite slabs weigh ~2700 kg/m³. An 18mm slab (2.4m x 0.75m) weighs 87 kg. For stairs stone, always add 25mm nosing overhang. For bulk stone sourcing, visit pro.nirmansutra.com.
🛠️ How It Works
- •Weight Mode: Calculate transport weight to check vehicle capacity.
- •Cost Mode: Applies rate per sq.ft after converting total m² area.
- •Stairs Mode: Separately calculates treads (plus nosing) and risers for precise ordering.
📐 Calculation Formula
Slab Weight = L × W × T × Density
Stair Tread Area = Steps × (Tread + Overhang) × Width
📋 Real-Life Example
Example: 10 Granite Steps (0.25m tread, 0.15m riser, 1.0m wide, 25mm nosing).
1. Tread Depth = 0.25 + 0.025 = 0.275m.
2. Tread Area = 10 * (0.275 * 1.0) = 2.75 m² (~29.6 sq.ft).
3. Riser Area = 10 * (0.15 * 1.0) = 1.5 m² (~16.1 sq.ft).
4. Total Stone = 45.7 sq.ft.
⚠️ Common Mistakes to Avoid
- ✕Ignoring the nosing overhang when ordering stone — this leads to a 10% shortage on site.
- ✕Ordering thin 15mm slabs for heavy traffic areas — always prefer 18-20mm for durability.
🔍People Also Search / यो Calculator मा अक्सर खोजिने कुराहरू
Granite price per sq ft in Nepal 2026
Marble flooring cost calculator for home
Stone stair tread and riser area calculation
Granite slab weight calculator for transport
Granite ra marble ko naap ra rate
Staircase stone nosing overhang rules
Italian marble price in Kathmandu library
Kitchen platform granite length calculator
Black galaxy granite price per square foot
सीढ़ियों में कितना पत्थर लगेगा?
❓ Frequently Asked Questions
Calculate the Tread (plus 25mm nosing) and the Riser separately. Multiply by width and number of steps to get total sq.ft requirements.
Standard granite has a density of 2700 kg/m³. An 18mm thick slab weighs approximately 48.6 kg per square meter (approx 4.5 kg per sq.ft).
Granite is harder and more scratch-resistant, preferred for stairs and kitchens. Marble is softer and stays cooler, ideal for living rooms.
Stop Guessing.
Start Building.
- ✕Square Feetको भ्रममा नफस्नुहोस्।(Don't get trapped in "Square Feet" rate illusions.)
- ✓Save up to 11% on materials with an accurate BOQ.
Worth NRs. 5,000
NRs. 999 🎯
Get Expert EstimateLimited Time Launch Price