Aggregate Cubic Meter Calculator

Quick Answer

Calculate aggregate volume by multiplying the area by the aggregate depth, then add your selected waste or compaction allowance.

For a rectangular area, the basic calculation is Length × Width × Depth. The calculator converts the result into cubic metres (m³), cubic yards (yd³), kilograms (kg), metric tonnes, and US tons using the selected aggregate density.

The Aggregate Cubic Meter Calculator calculates the quantity of aggregate required for landscaping, driveways, paths, patios, construction projects, road base, drainage, ground cover, and other aggregate applications. Enter your area shape, measurements, aggregate type, required depth, waste allowance, and optional price to calculate the material volume, coverage area, estimated weight, and cost.

Start by selecting a rectangle, circle, or triangle. Enter the required dimensions using metres (m), centimetres (cm), millimetres (mm), feet (ft), or inches (in). Rectangular areas require length, width, and depth; circular areas require diameter and depth; triangular areas require base, height, and depth.

The calculator converts the measurements into a consistent metric system, calculates the coverage area and aggregate volume, applies the selected waste or compaction percentage, and estimates material weight using bulk density. You can calculate quantities for crushed stone, gravel, pea gravel, sand, road base, ballast, or a custom aggregate density.

Aggregate Cubic Meter Calculator

Find the cubic metres & tonnes of aggregate you need — plus cost.

Metric & Imperial

1 Choose your area shape

2 Enter your dimensions

3 Aggregate type

Material type

4 Waste & cost (optional)

Add extra for waste / compaction (%)

Price

Per unit

Please enter valid dimensions.

5 Your estimate

Aggregate needed

0 m³

Enter dimensions and press Calculate.

Fill in the dimensions and press Calculate to see the cubic metres.

Weight

0tonnes

Coverage area

0m²

Volume

0yd³

Weight

0US tons

Estimated cost

$0.00

Selected material—

Weight (kg)0 kg

Volume0 ft³

Coverage area0 ft²

Includes waste0%

Length = longest ground side, Width = the other ground side, Depth = how deep the aggregate sits. Tonnes are estimates; aggregate density varies by type, grading and moisture.

Results are approximate. Always confirm quantities with your supplier before ordering.

How the Aggregate Cubic Meter Calculator Works

The Aggregate Cubic Meter Calculator calculates the surface area from your selected shape, multiplies the area by the required aggregate depth, and applies the selected waste or compaction allowance. The calculator then uses aggregate density to estimate the required weight in kilograms, metric tonnes, and US tons.

Enter Measurements

Select rectangle, circle, or triangle and enter the required dimensions.

Select Aggregate

Choose crushed stone, gravel, pea gravel, sand, road base, ballast, or custom density.

Calculate Quantity

Get cubic metres, cubic yards, coverage area, weight, and optional estimated cost.

Aggregate Cubic Meter Calculator Formula

Core Volume Formula

Volume = Area × Depth

Rectangle

Area = Length × Width

Circle

Area = π × Radius²

Triangle

Area = ½ × Base × Height

With waste or compaction: Adjusted Volume = Area × Depth × (1 + Waste ÷ 100)

Aggregate weight: Weight = Adjusted Volume × Aggregate Density

Aggregate density is expressed in kilograms per cubic metre (kg/m³). The selected density determines the estimated weight of the calculated aggregate volume.

Aggregate Cubic Meter Calculator Example

Example: Rectangular Aggregate Area

Calculate aggregate for a 6 m × 4 m area with a 10 cm depth.

Shape Rectangle

Length 6 m

Width 4 m

Depth 10 cm

Waste 10%

Material Crushed Stone

Area = 6 × 4 = 24 m²

Depth = 10 cm = 0.10 m

Base Volume = 24 × 0.10 = 2.40 m³

Volume With 10% Waste = 2.40 × 1.10 = 2.64 m³

Coverage Area 24.00 m²

Aggregate Volume 2.64 m³

Cubic Yards 3.45 yd³

Estimated Weight 4.22 tonnes

This example uses the calculator's default crushed stone density of 1,600 kg/m³. Actual aggregate weight varies according to material type, grading, moisture content, and compaction.

Helpful Information Before Calculating Aggregate

Measure the Area Correctly

Measure the length along the longest ground side of a rectangular area.
Measure the width across the other ground side.
Measure the required aggregate depth from the prepared surface to the finished level.
Enter measurements in metres, centimetres, millimetres, feet, or inches using the calculator's unit selector.

Choose the Correct Aggregate

Select crushed stone for common crushed rock applications.
Select gravel for loose gravel surfaces and landscaping.
Select pea gravel for smaller rounded aggregate applications.
Select sand for granular sand requirements.
Select road base / GAP for compacted base material.
Select ballast for heavier aggregate applications.
Select custom density when your supplier provides a specific density.

Allow for Waste and Compaction

Add a waste or compaction allowance when the project requires additional material. A 10% allowance increases the calculated base volume by 10% to account for material loss, uneven surfaces, handling, settlement, or compaction.

The appropriate allowance depends on the aggregate type, surface preparation, installation method, and project conditions.

Understand Aggregate Density

Aggregate density converts cubic volume into estimated material weight. Different materials have different bulk densities, and actual density can vary according to particle size, grading, moisture, and compaction.

Material	Density
Crushed stone / aggregate	1,600 kg/m³
Gravel	1,600 kg/m³
Pea gravel	1,540 kg/m³
Sand	1,600 kg/m³
Road base / GAP	2,100 kg/m³
Ballast	1,700 kg/m³

Check Your Measurement Units

The calculator accepts metres (m), centimetres (cm), millimetres (mm), feet (ft), and inches (in). Results include cubic metres (m³), cubic yards (yd³), kilograms (kg), metric tonnes, US tons, square metres (m²), and square feet (ft²).

Confirm Supplier Quantities

Calculator results are estimates because aggregate density, moisture, grading, and compaction vary. Confirm the final quantity, material specification, weight, delivery requirements, and supplier pricing before ordering.

Related Calculators

Use these related calculators to estimate other common aggregate, stone, gravel, and landscaping material quantities.

Frequently Asked Questions

What does an Aggregate Cubic Meter Calculator calculate?

The Aggregate Cubic Meter Calculator calculates the aggregate volume required for a defined area and depth, then estimates the corresponding material weight using the selected aggregate density. Results include cubic metres, cubic yards, kilograms, metric tonnes, and US tons.

How do I calculate aggregate in cubic metres?

For a rectangular area, multiply length by width to calculate the surface area, then multiply the area by the aggregate depth measured in metres. The basic formula is Volume = Length × Width × Depth. Add the selected waste or compaction percentage to calculate the adjusted aggregate volume.

How deep should aggregate be?

The required aggregate depth depends on the application, material, base preparation, intended use, loading conditions, and installation method. Enter the project-specific depth you require, such as 5 cm, 10 cm, 15 cm, or 20 cm, after determining the appropriate depth for your project.

Can I use feet and inches in this calculator?

Yes. The calculator accepts feet (ft) and inches (in), along with metres (m), centimetres (cm), and millimetres (mm). The calculator converts the entered measurements before calculating the aggregate volume.

How does aggregate density affect the calculation?

Aggregate density determines the estimated weight of a calculated volume. A higher-density material produces a higher estimated weight for the same cubic volume, while a lower-density material produces a lower estimated weight. Actual aggregate density varies according to material type, grading, moisture, and compaction.

Why should I add waste or compaction?

A waste or compaction allowance increases the calculated material quantity to account for material loss, uneven ground, handling, settlement, and compaction. The appropriate percentage depends on the material and project conditions.

How many tonnes of aggregate are in one cubic metre?

There is no single fixed tonnes-per-cubic-metre value for every aggregate type. The result depends on bulk density. For example, this calculator uses 1,600 kg/m³ for crushed stone, which equals approximately 1.6 metric tonnes per cubic metre before additional waste or project-specific adjustments.

Can I calculate the cost of aggregate?

Yes. Enter the material price and select whether the price is per cubic metre, metric tonne, cubic yard, US ton, or square metre covered. The calculator uses the selected quantity and price unit to estimate the material cost.