RightQty

Aggregates & landscaping

Pea gravel calculator

Calculate pea gravel for paths, patios, play areas, drainage zones, and decorative beds using a fixed pea-gravel material profile.

Project measurements

Calculate your pea gravel quantity

Measurement system
Area shape
Use the finished gravel depth, not the excavation depth.
gravel measurement diagramA rectangular gravel bed labeled length, width, and depth.LengthWidthDepth
Measure the finished area and the even depth of gravel you want—not the total excavation depth.
gravel type
Pea gravelPurpose-specific material profile
Small rounded gravel used for paths, patios, and drainage.
Overage

Covers spillage, uneven depth, settling, and minor measurement differences.

Advanced material assumptionDefault: 1,600 kg/m³
Leave blank to use the material profile. Ask your supplier for a project-specific density when precision matters.
Optional cost estimateEnter your supplier's USD price

Material only. Delivery, taxes, labor, and local price differences are not included.

No signup. Your measurements stay in your browser.

Your estimate

Order approximately

4.9cubic yards

Includes 10% overage and is rounded up to the next 0.1 yd³.

Area
360 sq ft
Base volume
4.44 yd³
Approx. order weight
6.59 US tons
See all volume and weight conversions

Base volume

120 ft³

4.44 yd³

3.4 m³

With overage

132 ft³

4.89 yd³

3.74 m³

Approx. weight

13,184.79 lb

6.59 US tons

5,980.52 kg

5.98 t

Example estimate: default sample values are shown. Update the measurements and select Calculate before using or copying this list.

Take this to your supplier

Shopping list

  • Pea gravelIncludes 10% overage. Confirm density and delivery increments with your supplier.4.9 cubic yards
Calculation assumptions
  • Bulk density: 1,600 kg/m³.
  • The area has a uniform finished depth.
  • Quantity includes the selected overage but not a separate compaction factor.

Planning guidance

Measure and choose assumptions before calculating

Transparent math

How the gravel calculation works

1

Find the area

Rectangle: length × width. Circle: π × (diameter ÷ 2)².

2

Find the volume

area × gravel depth, after every measurement is converted to the same base unit.

3

Add overage

volume × (1 + overage ÷ 100), then round up to a practical ordering quantity.

Weight is an estimate: volume × bulk density. Moisture, stone size, and compaction change real-world density, so confirm load limits and supplier conversions before ordering.

Pea gravel assumptions

Plan for movement and containment

Pea gravel is rounded and does not lock together like angular crushed stone. Edging, the prepared base, drainage, and intended use matter as much as quantity. The calculator uses an approximate bulk density of 1,600 kg/m³, which you can override with supplier data.

Not a structural base recommendation

This page estimates pea gravel quantity only. It does not determine load-bearing suitability, drainage design, or required base depth.