What this calculator does
This tool turns your measurements into a consistent planning estimate you can review before pricing or starting work. It is useful during early takeoffs, option comparisons, and on-site checks where transparent math matters.
How the calculation works
Formula
Volume = length × width × depth × quantity. Weight = planned volume × density.Worked example
A 20 × 10 ft area, 3 in deep, contains 50 ft³ or about 1.85 yd³ before waste.
How to measure
- 01Measure compacted target depth, not loose pile height.
- 02Use average dimensions where the excavation varies.
Common mistakes to avoid
- Using the wrong density unit
- Ignoring compaction
- Assuming every gravel type weighs the same
Limits of this estimate
Default density is 2,800 lb/yd³ (1,661 kg/m³). Type, grading, moisture, and compaction change real weight.
Frequently asked questions
Why can I edit density?
Crushed stone, pea gravel, and wet material can have very different bulk densities.
Does waste include compaction?
Not automatically. Choose an allowance suitable for your material and installation.