Gravel & Sand Volume and Weight
Area times depth is the volume, and gravel runs about 1.6 tonnes per cubic metre. Suppliers usually sell by weight, so volume alone will not place the order.
Your numbers
Volume
1.2m³
Gravel weight
1.92t
Weight (kg)
1,920kg
Formula
Volume = Length × Width × Layer depth ÷ 100
Densities differ: gravel 1.6, dry sand 1.5, wet sand 1.9, topsoil about 1.3. Compaction takes another 10–15% off the depth.
What to enter
| Input | Default | Accepted range |
|---|---|---|
| Length (m)The measurement across, side to side. | 5 | 0 and up |
| Width (m)The measurement front to back. | 3 | 0 and up |
| Layer depth (cm)How thick the layer will be laid. | 8 | 0 and up |
Step by step
Quick reference table
Results when only Length (m) changes and everything else stays put.
| Length (m) | Volume (m³) | Gravel weight (t) | Weight (kg) (kg) |
|---|---|---|---|
| 2.5 | 0.6 | 0.96 | 960 |
| 3.75 | 0.9 | 1.44 | 1,440 |
| 5 | 1.2 | 1.92 | 1,920 |
| 7.5 | 1.8 | 2.88 | 2,880 |
| 10 | 2.4 | 3.84 | 3,840 |
What each result means
| Result | At default values |
|---|---|
| Volume (m³)The space a solid holds — length cubed. | 1.2 |
| Gravel weight (t)The weight of that volume; materials are sold by weight. | 1.92 |
| Weight (kg) (kg)Mass in kilograms. | 1,920 |
Common mistakes
Densities differ: gravel 1.6, dry sand 1.5, wet sand 1.9, topsoil about 1.3. Compaction takes another 10–15% off the depth.
Glossary
- Length
- The measurement across, side to side.
- Width
- The measurement front to back.
- Layer depth
- How thick the layer will be laid.
- Volume
- The space a solid holds — length cubed.
- Gravel weight
- The weight of that volume; materials are sold by weight.
- Weight (kg)
- Mass in kilograms.
Frequently asked questions
Q. How is Gravel & Sand Volume and Weight calculated?
Volume = Length × Width × Layer depth ÷ 100 — Area times depth is the volume, and gravel runs about 1.6 tonnes per cubic metre. Suppliers usually sell by weight, so volume alone will not place the order.
Q. Can you walk through an example?
With Length 5m, Width 3m, Layer depth 8cm, the answer is Volume 1.2m³.
Q. What do I need to enter?
Enter Length, Width, Layer depth. The result recalculates as you type, and an empty box counts as zero.
Q. How much does the answer move if I change a number?
Changing only Length (m) moves the answer to Length (m) 2.5 → Volume (m³) 0.6 and Length (m) 10 → Volume (m³) 2.4. The table below lays out five steps.
Q. How are the numbers rounded?
Money is shown to the nearest whole unit, percentages to one decimal place and everything else to two. What you see is rounded; the calculation itself carries the unrounded value forward.
Q. Anything to watch out for?
Densities differ: gravel 1.6, dry sand 1.5, wet sand 1.9, topsoil about 1.3. Compaction takes another 10–15% off the depth.
Related calculators
Keep your length units consistent across inputs — mixing centimetres and metres throws results far off.