What to enter
- Enter the area dimensions or reuse a saved space.
- Enter the installed gravel depth.
- Choose bagged or bulk purchase mode and enter the relevant bag or bulk size.
- Set an allowance and optionally enter a unit price.
Gravel Calculator
Calculate gravel volume, bags, bulk quantity, estimated weight and cost.
My ProjectNo saved space selectedSave a room once and reuse it here.
Your estimate
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Ready when you are
Enter the area and material depth to get a purchase-ready volume estimate and optional cost.
Recommended purchase
0
Recommended quantity
Includes your selected allowance.
Estimated material cost—
Project area—
Material depth—
Raw volume—
Allowance—
Recommended volume—
Bag size—
Use the product or supplier figure when available.
Loose landscaping materials settle and vary by particle size and moisture. The calculator is intended for purchasing estimates, not exact delivered mass.
Shopping estimate
Next: calculate pavers—
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Plan with confidence
How to use the Gravel Calculator
Estimate gravel for paths, driveways, drainage layers and landscaping from the area and desired depth, with bag or bulk purchase options.
How the calculation works
PlanCalq multiplies surface area by depth to estimate material volume, then adds the selected allowance for settlement, grading and measurement variation.
The recommended volume is converted into bags or bulk units. The displayed weight is approximate because gravel density varies by material and moisture content.
Calculation summary
Area × depth = gravel volumeVolume × (1 + allowance %) = recommended volumeRecommended volume ÷ bag or bulk unit volume = purchase units (rounded up where needed)Common questions
Gravel Calculator FAQs
Why is gravel depth important?
A small change in depth across a large area can significantly change total volume, so use a realistic compacted depth.
Is the weight exact?
No. Weight is an approximate planning value because different aggregates have different bulk densities.
Should I order extra gravel?
An allowance can help cover settlement, uneven ground, compaction and small measuring errors.