Calculators › Aggregate Conversion

Aggregate Conversion Calculator

Convert between tonnes, cubic metres, and cubic yards for common aggregate materials.

Inputs

For estimation purposes only. Terms of Use

Conversions

Tonnes
Cubic Metres
Cubic Yards
Truck loads (20t)

Formula Used

Tonnes = Volume (m³) × Density (kg/m³) ÷ 1000
m³ = Tonnes ÷ Density × 1000
yd³ = m³ ÷ 0.7646

Worked Example

Converting 50 tonnes of Granular A (1600 kg/m³):

m³ = 50 ÷ 1600 × 1000 = 31.25 m³
yd³ = 31.25 ÷ 0.7646 = 40.87 yd³

When to Use This Calculator

Use this when comparing supplier quotes given in different units, checking delivery quantities against ordered tonnage, or estimating volume needed for a granular base or sub-base layer.

When Not to Use This Calculator

Bulk densities vary by source, moisture content, and compaction. For contract quantities or payment certificates, use the supplier's certified density values, not general estimates.

Frequently Asked Questions

Why does aggregate density vary?

Density depends on the material source, particle size gradation, moisture content, and how compacted it is. Always confirm with your specific supplier when accuracy matters.

Is Granular A or B denser?

Granular B is typically slightly denser than Granular A due to its larger aggregate size and gradation, though both fall in a similar range around 1600-1700 kg/m³.