Paver & Hardscape Calculators

Hardscape projects — patios, walkways, driveways, and retaining walls — are some of the most rewarding outdoor improvements you can make, but they demand precise material planning. Unlike a bag of mulch you can eyeball, a paver project involves multiple layers that must be built in sequence: a compacted gravel sub-base, a leveling sand layer, the pavers themselves, and polymeric sand to lock the joints. Skip a layer or under-order one material and the entire timeline stalls. Our paver and hardscape calculators walk you through the project in the same order you will build it, so you can place one comprehensive material order before breaking ground.

Each calculator accounts for the real-world factors that make hardscape estimates tricky. The Paver Base Calculator includes compaction loss so you order enough gravel before it gets compacted down. The Paver Calculator adjusts for pattern waste — herringbone cuts generate more scrap than running bond — and returns exact paver counts plus the number of pallets to order. The Retaining Wall Calculator handles blocks, cap stones, drainage gravel, and backfill in a single session, and it flags walls that exceed standard gravity-wall heights so you know when to call an engineer. Whether you are building a small front-walk refresh or a full backyard patio with a seat wall, these tools give you a purchase-ready materials list that matches the way suppliers sell.

All Paver & Hardscape Calculators

Choose a calculator to plan your hardscape project from base to finish.

Paver Base Calculator

How much gravel and sand for a paver base?

Calculate compacted gravel sub-base and leveling sand layers for patios and walkways.

Calculate →

Paver Calculator

How many pavers do I need?

Calculate paver counts with pattern waste factors for running bond, herringbone, and more.

Calculate →

Retaining Wall Calculator

How many blocks and caps for a retaining wall?

Calculate wall blocks, cap stones, drainage gravel, and backfill with engineering height warnings.

Calculate →
Advertisement
Mid-Page Ad

Looking for other calculators?

Landscaping Calculators → Deck & Fence Calculators →

Frequently Asked Questions

How deep should a paver base be? +
For most residential patios and walkways, plan for a 4-inch layer of compacted gravel topped by a 1-inch layer of leveling sand. Driveways that will support vehicle traffic need a thicker base — typically 6 to 8 inches of compacted gravel — to prevent settling and cracking over time. In regions with freeze-thaw cycles you may need to go even deeper, up to 12 inches, to get below the frost line. Our Paver Base Calculator factors in compaction ratios automatically, so the quantity it returns accounts for the 15 to 20 percent volume loss that happens when you run a plate compactor over loose gravel.
How do I choose a paver pattern? +
Pattern choice affects both the look of your project and the amount of waste you will generate from cuts. Running bond (a simple staggered brick layout) is the easiest to install and produces the least waste — roughly 5 percent extra. Herringbone patterns interlock better and resist shifting under traffic, making them the best choice for driveways, but they require more angled cuts at the edges and generate 10 to 15 percent waste. Basketweave and circular patterns fall somewhere in between. Our Paver Calculator lets you select your pattern and automatically adjusts the waste factor so your order quantity is accurate regardless of which layout you choose.
When does a retaining wall need engineering? +
As a general rule, any retaining wall taller than 4 feet (measured from the bottom of the footing to the top of the wall) should be designed or reviewed by a licensed structural engineer. Many local building codes require a permit and engineered drawings for walls above this height. Even walls under 4 feet may need engineering if they are supporting a slope with surcharge loads — for example, a driveway, structure, or heavy equipment above the wall. Our Retaining Wall Calculator displays a warning when your wall height exceeds the gravity-wall threshold, reminding you to consult a professional before ordering materials.