Complete Gravel Size Chart with Pictures for Driveways and Landscaping

Choosing the right gravel size can make or break your project. Whether you’re building a driveway that needs to handle heavy traffic or creating a comfortable garden path, the size of your gravel affects everything from drainage and stability to how pleasant it is to walk on.

Quick Answer: Most driveways use #57 gravel (3/4-inch) for the base layer and smaller stones like pea gravel for the top layer. Garden paths work best with pea gravel or #8 stones, while drainage projects need larger #4 or #1 stones.

This guide walks you through the most common gravel sizes with pictures, shows you exactly which size works best for different projects, and helps you avoid costly mistakes. You’ll find detailed charts, real-world examples, and practical advice to choose confidently.

Understanding gravel sizes and numbering systems

Gravel sizes follow a simple numbering system that tells you how big the stones are. The numbers like #57, #4, and #8 refer to the screen size used to sort the stones. Smaller numbers mean larger stones, while larger numbers mean smaller stones.

Most gravel falls into size ranges measured in both millimeters and inches. For example, #57 gravel typically measures between 19-25mm or about 3/4 inch. These measurements help you understand exactly what you’re getting and whether it fits your project needs.

The key difference between gravel and crushed stone is shape. Gravel has rounded edges from natural weathering, while crushed stone has sharp, angular edges from being mechanically crushed. Both use the same sizing system, but crushed stone typically compacts better for structural applications.

Complete gravel size chart

This chart covers the most commonly used sizes for residential and commercial projects. Regional suppliers might have slight variations, but these ranges give you a solid starting point for any project.

Common gravel sizes with pictures and uses

Pea gravel (2-8mm)

Pea gravel gets its name from its small, rounded shape that resembles garden peas. These smooth stones feel comfortable underfoot and create an attractive, natural look that works well in high-visibility areas.

You’ll find pea gravel perfect for garden paths, around trees and plants, and in decorative landscaping. It drains well but stays put better than larger stones. The downside is that it can scatter under heavy foot traffic and isn’t suitable for vehicle traffic.

#57 gravel (19-25mm)

This medium-sized crushed stone represents the sweet spot for many projects. #57 gravel compacts well while still allowing good drainage, making it the go-to choice for driveway construction and road base applications.

Pro Tip: #57 gravel works as both a base layer and surface layer for driveways, though you might want smaller stones on top for comfort and appearance.

Most contractors use #57 for the main structure of driveways because it handles vehicle weight while preventing the muddy, rutted conditions that come with poor drainage. It’s also cost-effective and widely available.

#4 gravel (19-38mm)

These larger stones excel in heavy-duty applications where drainage and load-bearing capacity matter most. #4 gravel creates an excellent foundation layer and works well in areas with poor soil drainage or heavy traffic.

You’ll typically see #4 gravel used as a base layer under smaller stones, in French drains, and around foundations where water management is critical. The larger size means it won’t compact as tightly, which keeps water flowing freely.

Crusher run (0-40mm mix)

Crusher run combines stone dust with various sizes of crushed stone, creating a mixture that compacts into a solid, stable base. This isn’t technically one size but rather a blend of construction stone sizes designed for maximum stability.

The fine particles fill gaps between larger stones, creating a surface that’s almost concrete-like when properly compacted. Crusher run works exceptionally well for driveway bases, parking areas, and anywhere you need a firm, stable foundation.

Choosing the right gravel size for your project

The key to choosing gravel lies in understanding what your project needs most. Heavy traffic areas need stability and compaction, while decorative areas prioritize appearance and comfort. Drainage requirements also play a major role in your decision.

For driveways that see regular car traffic, start with #4 or #57 gravel as your base layer, then add a surface layer of #8 or pea gravel for appearance and comfort. This two-layer approach gives you both structural integrity and a pleasant driving surface. Learn more about selecting the perfect driveway stone size for your specific needs.

Garden paths and walking areas work best with smaller, rounded stones like pea gravel or #8 gravel. These sizes feel comfortable underfoot while still providing good drainage. Avoid larger stones in areas where people walk regularly, as they can be uncomfortable and create tripping hazards.

Important: Consider your local climate when choosing gravel. Areas with heavy rainfall need larger stones for better drainage, while dry climates can use smaller stones without drainage concerns.

Drainage projects like French drains or foundation drainage require larger stones (#4 or bigger) that won’t clog with fine particles over time. The goal is maintaining long-term water flow, which means choosing sizes that resist compaction.

Installation tips and coverage guidelines

Proper installation makes a bigger difference than the gravel type itself. Start with proper excavation, add landscape fabric if needed, and install your base layer before adding surface materials. Most driveways need 4-6 inches of total gravel depth.

Calculate coverage using the simple rule that one ton of gravel typically covers about 100 square feet at 2 inches deep. Adjust this calculation based on your specific depth requirements and the compaction characteristics of your chosen gravel size.

Compact each layer as you go, especially with base materials like crusher run or #57 gravel. Proper compaction prevents settling and extends the life of your project significantly. Rent a plate compactor for best results, or use hand tamping for smaller areas.

Ready to order the right gravel for your project? Use our aggregate calculator to estimate quantities, or take our quick quiz to confirm you’re choosing the best size for your specific needs. For a comprehensive overview of aggregate sizes and their applications, explore our detailed reference guide. Our team can also help you plan the perfect gravel solution and arrange delivery anywhere in your area.

Gravel Size FAQ