Tonnage Calculator
Calculate tonnage of construction aggregates including gravel, sand, crushed stone, and other materials
Calculate Aggregate Tonnage
Unit weight: 1600 kg/m³
Material Cost (Optional)
Tonnage Results
Formula: Weight = Volume × Unit Weight
Volume: Area × Depth
Unit Weight: 1600 kg/m³
Material: Gravel (General)
Dimensions: 0×0 m × 0 cm
Conversion: 0 kg = 0.000 tons
Material Analysis
Example Calculation
Gravel Driveway Example
Project: Gravel driveway base
Material: Gravel (unit weight: 1600 kg/m³)
Dimensions: 20 m × 4 m × 10 cm depth
Area: 20 × 4 = 80 m²
Calculation Steps
1. Volume = Area × Depth = 80 m² × 0.10 m = 8.0 m³
2. Weight = Volume × Unit Weight = 8.0 × 1600 = 12,800 kg
3. Tonnage = Weight ÷ 1000 = 12,800 ÷ 1000 = 12.8 tons
Result: You need approximately 12.8 tons of gravel
Unit Weights (kg/m³)
+ 10 more materials available
Common Applications
Driveways
Gravel, crushed stone, 5-15cm depth
Foundation
Crushed stone, sand, 10-30cm depth
Landscaping
Topsoil, mulch, decorative stone
Drainage
Gravel, river rock, pea gravel
Tonnage Tips
Add 5-10% extra for wastage and compaction
Verify unit weight with your supplier
Consider delivery truck access and weight limits
Check local building codes for depth requirements
Compact in layers (lifts) for best results
Understanding Tonnage Calculations
What is Tonnage?
Tonnage refers to the total weight of construction materials measured in tons (metric tons = 1000 kg). It's the standard unit for ordering and pricing bulk construction materials like aggregates, sand, gravel, and crushed stone.
Why Calculate Tonnage?
- •Material ordering and cost estimation
- •Transportation planning and logistics
- •Project planning and scheduling
- •Storage space requirements
Basic Formula
Tonnage = Volume × Unit Weight ÷ 1000
W = V × γ × 0.001
- W: Weight in tons (t)
- V: Volume in cubic meters (m³)
- γ: Unit weight (kg/m³)
- 0.001: Conversion factor kg to tons
Volume Formula
Volume = Area × Depth
V = A × d
Common Unit Weights
Gravel: 1600 kg/m³
Sand: 1600 kg/m³
Crushed Stone: 1700 kg/m³
Topsoil: 1200 kg/m³
Conversion Factors
1 metric ton: 1000 kg
1 metric ton: 2204.62 lb
1 short ton: 907.18 kg
1 cubic yard: 0.7646 m³
Coverage Examples
1 ton gravel: ~6.25 m² at 10cm
1 ton sand: ~6.25 m² at 10cm
1 ton topsoil: ~8.33 m² at 10cm
Depth doubles: Area halves