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Gravel Calculator

Gravel is measured in cubic meters for ordering and tons for delivery. This calculator estimates the volume needed for a given area and depth, and warns about compaction loss.

What Is Gravel?

Gravel volume is the amount of crushed stone or aggregate needed to fill an excavated area, measured in cubic meters. It is calculated by multiplying length, width, and depth. Adding 5–10% extra accounts for compaction and settlement after spreading.

Formula: Length x Width x Depth

Example

Formula: Length x Width x Depth
= 5 m x 3 m x 0.1 m
= 1.50 m³

Enter length, width, and depth in your preferred units, then the result will be in m³.

Tip: Choose your result unit on the right before calculating.

Step-by-step calculation

  1. Enter length, width, and depth with units.
  2. Select the result unit you want (m³).
  3. Calculate to see gravel volume and steps in the selected unit.

How this is calculated

Gravel volume = area times depth; mass = volume times bulk density (gravel is typically 1500–1700 kg/m³ depending on gradation and moisture). We add 5–10% for compaction and spillage.

Sources: IS 383 (Coarse and Fine Aggregate for Concrete); ASTM C33.

FAQ

How do I calculate gravel volume by hand?
Multiply length x width x depth. Example: 5 m x 3 m x 0.1 m = 1.5 m³.
What is the formula for gravel volume?
Volume = Length x Width x Depth. Add 5–10% for compaction.
Gravel vs sand volume
Gravel compacts less than sand, but both use the same length x width x depth formula.
What units should I use?
Use meters for dimensions to get m³. Convert cm by dividing by 100.
Can I use this for a driveway?
Yes. Enter driveway length, width, and depth to estimate gravel needed.

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