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 |
|---|---|---|
| 0-5 mm | about 1.41 t | 1410 |
| 5-10 mm | about 1.38 t | 1380 |
| 5-20 mm | about 1.35 t | 1350 |
| 5-25 mm | about 1.38 t | 1380 |
| 20-40 mm | about 1.35 t | 1350 |
| 25-60 mm | about 1.37 t | 1370 |
| 40-70 mm | about 1.35 t | 1350 |
| 0-70 mm | about 1.52 t | 1520 |
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
How much does 1 m³ of crushed stone weigh?
For quick estimates, 1 m³ of crushed stone is usually taken as about 1.35-1.55 t. The exact value depends on fraction, rock type, moisture, particle shape and compaction.
How do you calculate crushed stone mass from volume?
Use the formula: mass = volume × bulk density. For example, 3 m³ at a density of 1450 kg/m³ weighs about 4350 kg.
Why do different crushed stone fractions have different weights?
Fraction size affects the amount of voids between particles. Rock type, particle shape, moisture and compaction also matter, so table values should be treated as approximate.