How much does 1 m³ of crushed stone weigh: table by fraction
On average, 1 m³ of crushed stone weighs from 1.35 to 1.55 tonnes. The exact value depends on the fraction, rock type, moisture, voids between particles and the degree of compaction.
For preliminary calculations, bulk density is usually used. It shows how many kilograms of material fit into one cubic meter, including the air voids between the stones.
Weight Table for 1 m³ of Crushed Stone
| Crushed stone fraction | Approximate weight of 1 m³ | Bulk density, kg/m³ |
|---|---|---|
| 5-20 mm | 1.35-1.45 t | 1350-1450 |
| 20-40 mm | 1.40-1.50 t | 1400-1500 |
| 40-70 mm | 1.45-1.55 t | 1450-1550 |
The values in the table are suitable for approximate calculations of delivery, backfilling, paths, platforms and other construction work. For accurate calculations, use supplier data or measurements for the specific batch.
How to Calculate Crushed Stone Mass
The mass of crushed stone can be calculated with the formula:
mass = volume × bulk densityFor example, if you need 3 m³ of 20-40 mm crushed stone and use 1450 kg/m³ as the estimated density:
3 × 1450 = 4350 kgSo 3 m³ of this crushed stone will weigh about 4.35 tonnes.
What Affects the Weight of Crushed Stone
The mass of one cubic meter depends on:
- fraction size: smaller fractions usually have fewer voids between particles;
- rock type: granite, limestone and gravel crushed stone have different densities;
- moisture: wet material can be noticeably heavier than dry material;
- compaction: after tamping, the same volume contains more material;
- dust and fines: small particles fill voids and change the bulk density.
Conclusion
For quick estimates, 1 cubic meter of crushed stone can be taken as approximately 1.35-1.55 t. If the calculation is related to purchasing, delivery or critical construction work, ask the supplier for the actual bulk density.
Frequently Asked Questions
Can the density of crushed stone be used for precise calculations?
The density and weight values for crushed stone in this article are reference values. They are suitable for preliminary estimates, but design, construction, production and other critical calculations should be checked against standards, material datasheets or measurement results.
Why can the actual weight of crushed stone differ from the table?
The actual weight of crushed stone depends on composition, moisture, temperature, porosity, fraction size, material grade and measurement conditions. Because of this, real values may differ from the average table data.
How do you calculate the mass of crushed stone from density?
For an approximate calculation, use the formula: mass = density × volume. If the density of crushed stone is given in kg/m³ and the volume is in m³, the result will be in kilograms.