Asphalt Calculator Square Meters
Metric-based calculator for asphalt projects using m², mm, and tonnes.
m²
Metric Calculator
All measurements in metric units
Results (Metric)
Area
0 m²
Total Mix Required
0 tonnes
0 kg
Bitumen
0 kg
Aggregates
0 kg
Volume
0 m³
📊
Metric Reference
Coverage Rates (tonnes per m² at 2350 kg/m³)
| Thickness | kg/m² | Per 100 m² |
|---|---|---|
| 25 mm | 58.75 kg | 5.88 tonnes |
| 50 mm | 117.5 kg | 11.75 tonnes |
| 75 mm | 176.25 kg | 17.63 tonnes |
| 100 mm | 235 kg | 23.5 tonnes |
Unit Conversions
- • 1 m² = 10.764 sq ft
- • 1 tonne = 1.102 US tons
- • 25 mm ≈ 1 inch
- • 50 mm ≈ 2 inches
⚙️
How Asphalt Calculator Square Meters Works
Visual calculation flow
L × W m²
→ × Thickness mm ÷ 1000 = m
→ Volume m³
→ × Density kg → tonnes
Tonnes = m² × (mm ÷ 1000) × Density ÷ 1000 Step 1: Enter length and width in meters. Area = L × W (m²).
Step 2: Select thickness in millimeters. Divide by 1000 to convert to meters.
Step 3: Volume (m³) × Density (kg/m³) = Weight in kg. Also calculates bitumen and aggregate breakdown.
Step 4: Divide by 1000 to convert kg to tonnes. Coverage rate shown as kg/m².
Asphalt Calculator Square Meters FAQs
How many tonnes of asphalt do I need per square meter?
For a standard 50mm thick asphalt layer at 2350 kg/m³ density, you need approximately 0.1175 tonnes (117.5 kg) per square meter. This varies by thickness: 25mm = ~59 kg/m², 40mm = ~94 kg/m², 75mm = ~176 kg/m².
Why do metric countries use square meters for asphalt?
Square meters is the International System (SI) standard unit for area measurement, used in most countries worldwide. It simplifies calculations since volume = m² × thickness (in meters), and density is expressed in kg/m³, making the math straightforward without complex unit conversions.
What is the density of asphalt in kg/m³?
Hot mix asphalt (HMA) typically has a compacted density of 2300-2400 kg/m³. The exact value depends on the aggregate type and mix design: Dense-graded mixes average 2350 kg/m³, Stone Mastic Asphalt (SMA) is around 2400 kg/m³, and porous asphalt is lighter at 2000-2200 kg/m³.
How do I convert square meters to tonnes for asphalt ordering?
Formula: Tonnes = Area (m²) × Thickness (m) × Density (kg/m³) ÷ 1000. For example, 100 m² at 50mm thick: 100 × 0.05 × 2350 ÷ 1000 = 11.75 tonnes. Always add 5-10% extra to account for compaction, edge work, and waste.
Explore Calculator Types
Specialized calculators for your specific project needs