Gravel Calculator
Adjust the inputs below. Results update as you type.
How it works
Volume = length × width × depth. Convert inches to feet (divide by 12) before multiplying; divide cubic feet by 27 for cubic yards. Gravel density varies: pea gravel ≈ 1.4 t/m³; crushed stone ≈ 1.5–1.7 t/m³. Add 10–15% for settling and waste. A 4-inch layer is typical for driveways; 2–3 inches for paths and beds. Compacting after installation prevents sinking.
Input guidance
- Confirm date/time/unit settings before comparing outputs.
- If a task has optional fields, run both with and without them to understand impact.
- Save scenario variants when making practical decisions.
The formula
Gravel volume = area × depth; weight = volume × density (gravel is roughly 1.4–1.7 tons per cubic yard). Convert feet to cubic yards by dividing by 27.
Worked example
A 100 sq ft path at 4 inches deep is 33.3 cubic feet ≈ 1.23 cubic yards, weighing roughly 1.8 tons.
More examples to test
- Quick-pass example: run default assumptions for a first estimate.
- Refined example: update one assumption at a time to isolate impact.
How to interpret results
Use outputs as operational estimates and pair them with local constraints, business rules, or provider requirements.
When this can be inaccurate
Utilities can miss local policy details, special-case rules, and environment-specific constraints.
Change history
- July 2026: Quality-reviewed for publication with formula checks and explanatory copy updates.
Site-wide corrections also appear on the corrections log.
Find productivity tools for everyday workflows
General recommendation, not professional advice.
Frequently asked questions
How much gravel do I need?+
Multiply area by depth for volume, then convert to cubic yards or tons using gravel's density to order the right amount.
How deep should a gravel layer be?+
About 2–4 inches for paths and patios; driveways often need a deeper, layered base for stability.
How heavy is gravel?+
Roughly 1.4–1.7 tons per cubic yard depending on the stone, which matters for delivery and for what your vehicle can carry.
Why are outputs slightly different from another tool?+
Different tools can use different rounding rules, default assumptions, and treatment of edge cases.
How can I improve estimate reliability?+
Use verified inputs from real records and re-run calculations after major assumption changes.
Guided next steps
Want the full workflow? Use this calculator inside a step-by-step guide.