Gravel Driveway Tonnage Calculator

Plan gravel deliveries using driveway area, thickness, and density presets smart. Account for compaction, wastage, moisture swell, and subgrade conditions with sliders. Mix coverage modes handle rectangles, curves, or segmented lanes and turnouts easily. Export rows to CSV or PDF, save presets, and share links instantly. Confident tonnage planning for predictable budgets and scheduling.

Inputs
v1.2 — edge-shoulder + supplier profiles
Output in short tons for US, tonnes for Metric.
Profile
Profiles store density and allowances so you can reapply supplier specifics.
Presets are typical references. Override for supplier specifics.
kg/m³
in
Compacted thickness unless you tick “loose thickness” below.
Edge‑shoulder mode
ft
Rectangle: along long sides. Circle: full ring.
× base
Driveway Segments
Name Shape Length (ft) Width (ft) / Diameter Actions
Shapes: Rectangle, Circle.
Results
Total Area
—
(ft²)
Compacted Volume
—
(yd³)
Loose Volume (adjusted)
—
(yd³)
Estimated Tonnage
—
(short tons)
# Name Shape Length Width/Dia Base Area Thickness Compacted Vol Loose Vol Tonnage
Example Data

Click “load” to replace your current segments with this sample.

Name Shape Length Width/Dia Thickness Load
Main laneRectangle120106
TurnoutRectangle2086
Cul‑de‑sacCircle30—6
Formula Used
  1. Areas:
    Rectangle = Length × Width.
    Circle = π × (Diameter/2)².
    Shoulder (rectangle) ≈ 2 × Length × ShoulderWidth (sides only).
    Shoulder (circle) = π[(r+sw)² − r²] where r=Diameter/2.
  2. Compacted volume:
    US: Σ[ Area(ft²) × Thickness(in) / 12 ] → ft³ → /27 = yd³
    Metric: Σ[ Area(m²) × Thickness(cm) / 100 ] → m³
  3. Loose volume:
    If thickness is compacted: Loose = Compacted × (1 + Compaction%)
    Always then: Adjusted = Loose × (1 + Waste%) × (1 + Moisture%)
  4. Tonnage:
    Mass(kg) = Adjusted volume(m³) × Density(kg/m³)
    Short tons = kg / 907.18474; Tonnes = kg / 1000
Presets are approximate; confirm supplier densities for precise ordering.
How to Use
  1. Select unit system and a material preset, or enter custom.
  2. Optionally pick a supplier profile to auto‑fill density and allowances.
  3. Enter finished thickness, or tick “loose thickness” accordingly.
  4. Enable edge‑shoulder mode for side shoulders; set width and factor.
  5. Add segments and dimensions; override thickness or shoulder per segment.
  6. Click Calculate to see volumes and estimated delivery tonnage.
  7. Export CSV or PDF, or copy a shareable settings link.
FAQs

Some mixes include typical compaction hints. They pre‑fill the compaction box. Always verify against project specs and local practices.

Save your current density and allowances with a name. Select that profile later to apply the same values quickly. Profiles are stored in your browser.

It multiplies base thickness to estimate shoulder thickness. Use 1.0 for same thickness, or reduce for tapering shoulders.

This mode estimates side shoulders along the driveway edges. It excludes driveway ends to avoid double counting overlaps at intersections or aprons.

Yes. The detailed table and PDF/CSV include separate shoulder area and volume columns when edge‑shoulder mode is enabled.

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Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.