Gravel guides
The reference library that backs the calculators. Practical answers on depth, density, cost, and how to plan a real-world project.
All guides
How Much Does a Gravel Driveway Cost?
Real numbers for materials, delivery, and labor — broken down by driveway size and build quality.
Cubic Yards to Tons of Gravel — How to Convert
The math, the shortcut, and a per-material reference table for converting between volume and weight.
Types of Gravel: Sizes, Uses, and a Visual Reference
What #57, #8, #4, MOT Type 1, and crusher run actually mean — and which one belongs in your project.
Gravel Depth Guide: How Deep for Driveways, Paths, and Patios
Practical depths by use case, with the reasoning behind each — and the depths to avoid.
How Much Gravel Do I Need? A Practical Guide
The three-step framework for estimating any gravel project: measure, choose depth, account for density.
Compaction Rates and the 10% Waste Buffer Explained
Why a 4-inch lift becomes 3.4 inches after compaction, and how much extra to order.
How to Measure an Irregular Area for Gravel
The decompose-and-sum technique that turns kidney-shaped beds and curved paths into a clean order.
Gravel vs. Crushed Stone — What's the Difference?
Naturally-rounded gravel vs. mechanically-crushed stone, when each one wins, and why it matters.
Browse by topic
Estimating
How to figure out the gravel quantity for any project.
Measuring
Practical techniques for getting accurate dimensions.
Depth
How deep to make the gravel layer for each project type.
Types & sizes
Choosing the right material — by AASHTO grade or supplier name.
Conversions
Cubic yards, tons, cubic meters, tonnes — the math and the tables.
Cost & ordering
Budgeting, pricing, and what to expect from suppliers.
How the guides work with the calculators
Every calculator on the site uses the same volume math and density data the guides explain. If you want the answer fast, use the flagship calculator or pick a project-specific calculator. If you want to understand the answer — what depth to use, why a buffer matters, why two yards of pea gravel weigh less than two yards of crusher run — start in the guides.
For the full set of formulas, density figures, and source citations, see the methodology page.