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Landscaping & outdoors

Gravel Calculator

Estimate gravel volume for rectangular, circular, multiple, or known-area projects—with optional weight and bag estimates only when you provide product data.

How much gravel do you need?

How is your gravel area measured?

Measurement system

How is your gravel area measured?

Add each different rectangular size. One common depth is applied to every row.

Area 1
Length
Width

Up to 20 areas can be entered.

Gravel depth

Gravel depth

Enter the finished gravel depth you plan to place. Measivo does not assume a depth for your project.

The 10% starting value is an editable planning allowance for ordering. It is not a compaction factor.

Do you have a supplier bulk density?

Use the loose bulk density supplied for the exact material and ordering condition. No gravel type selects a density automatically.

Do you know the actual volume per bag?

Use the actual volume or yield printed for the exact bag. No universal bag size is assumed.

How it works

How area and depth become a gravel order.

We calculate the measured area, multiply by your explicit depth, then apply the planning allowance before any optional weight or bag calculation.

Rectangular areas

Area = length × width × quantity

Multiple-area mode totals every row and applies one common depth.

Circular areas

Area = π × (diameter ÷ 2)² × quantity

The diameter describes a complete circle.

Order volume

Order volume = area × depth × (1 + allowance %)

The allowance is a planning input, not an assumed compaction factor.

Optional weight and bags

Weight = order volume × density; bags = round up(order volume ÷ bag yield)

These results appear only when you enter the corresponding supplier or product value.

Before you order

What this estimate assumes

  • Entered areas are regular, flat shapes and the selected gravel depth is uniform. Projects with different depths should be calculated separately.
  • The default 10% extra-material allowance is editable planning room. It does not predict compaction, settlement, or site loss.
  • Bulk density is never inferred from a gravel name. Weight appears only when you enter a supplier value for the exact material and condition.
  • Bag counts use only the actual product volume or yield you enter; bag net weight is not converted into volume.

Confirm density and yield with the supplier

Aggregate bulk density varies with material, particle grading, moisture, and loose or compacted condition. Bag coverage and yield also vary by product. Use current supplier or manufacturer data whenever available.

These references document why density, compaction, and packaged-product yield must remain explicit inputs rather than universal assumptions.

Primary references