Pea Gravel Calculator
Smaller stone is easier on bare feet for paths. Estimate volume and approximate tons from bed dimensions.
Step 1: Units
Step 2
Enter project measurements
Use decimals if needed (e.g. 3.5).
Step 3
How to use this calculator
Measure the coverage rectangle and average depth you want after compaction. Deeper sections can be averaged or split into multiple runs.
What the math is doing
Volume is length × width × depth. Weight multiplies volume by a typical bulk density for that material.
How to measure
Stake the area and run a string line for straight edges. Depth is from existing grade to finished grade.
Frequently asked questions
Edging required?
Loose stone migrates; plastic or steel edging helps.
Underdrain wraps?
Geotextile lines keep fines from clogging drains.
Depth for paths?
2–3 in is common for walking surfaces over a compacted base.
Play areas?
Check local safety guidelines for impact surfaces.