Calculadora de Areia
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
Formula
V = l·w·d; peso = V × 1,5 t/m³ (areia solta)
About this calculator
The sand calculator estimates the volume and weight of sand needed to fill a rectangular area, such as a plot of land or a sandbox. Simply enter the length, width, and desired depth in meters. The volume is calculated by multiplying these three dimensions (V = length × width × depth). Then, the weight is obtained by multiplying the volume by 1.5 tons per cubic meter, which is the average density of loose moist sand.
This tool is useful for civil construction projects, such as preparing mortar, concrete, or base for floors. It can also be used to size sand for playgrounds, landfills, or gardening. The result is given in cubic meters (volume) and tons (weight), making it easier to purchase the material.
Important precautions: sand density varies with moisture and compaction. Very wet or compacted sand can weigh more than 1.5 t/m³. For greater accuracy, consult your local supplier. Additionally, the calculator assumes a perfectly rectangular shape; irregular areas require division into rectangular sections.
Remember that the calculated volume is loose volume. When compacting sand (e.g., for concrete bases), the final volume will be smaller. Consider a safety margin of 10-20% to compensate for losses and compaction.
Frequently asked questions
How do I measure the depth of the sand?
Use a measuring tape to measure the vertical distance from the bottom to the desired top. Make sure the area is level.
Is sand density always 1.5 t/m³?
No. Density varies with moisture and grain size. Dry sand can be 1.4 t/m³, while wet sand can reach 1.6 t/m³. Consult your supplier for a more accurate value.
Can I use this calculator for beach sand?
Yes, but adjust the density if needed. Beach sand usually has similar density, but may contain salt and shells, which alter the weight.
What if my area is not rectangular?
Divide the area into rectangular shapes, calculate each part separately, and sum the volumes. The calculator only works for rectangles.
Do I need a safety margin for the quantity?
Yes, it is recommended to add 10-20% extra to compensate for losses during transport and compaction, especially in construction.