DIY paver guide

Paver Calculator with Spacing

Last updated June 2, 2026

A paver calculator with spacing treats each paver plus its joint as a module. This is useful for layout planning, especially when joint width is large enough to change the count.

Quick answer

Spacing-adjusted count uses module size: paver length plus joint width by paver width plus joint width.
For purchasing, keep a waste allowance even if spacing lowers the theoretical count.
Use the full estimator to calculate base, bedding sand, polymeric sand, edging, and cost after you choose a layout.

10x10 patio count with spacing examples

Paver size	Joint width	Module area	Estimated count with 10% waste
8x4 in	0 in	0.22 sq ft	495
8x4 in	1/8 in	0.23 sq ft	473
8x4 in	1/4 in	0.24 sq ft	452
12x12 in	1/4 in	1.04 sq ft	106

Spacing examples use rectangular modules and simple layouts. Mixed-size patterns and curves need layout-specific takeoffs.

Complete project estimator

Paver Material Calculator

One input set for base, bedding sand, polymeric sand, pavers, edging, material cost, and installed estimate.

Imperial Metric

Popular patio sizes:

Patio length (ft) Measure the longest side. Patio width (ft) Use the average width for irregular shapes. Paver length (in) Face dimension of one paver. Paver width (in) Face dimension of one paver.

Advanced settings

Base depth (in) Recommended starting point depends on use. Bedding sand depth (in) A 1 inch screeded bed is common. Joint width (in) Average open joint width. Joint depth (in) Depth filled with polymeric sand. Waste allowance (%) Covers cuts, compaction, and ordering buffer. Base density (tons/cu yd) Supplier density for crushed aggregate. Base bag size (cu ft) Only needed for bag count. Sand bag size (cu ft) Only needed for bag count. Polymeric sand coverage (sq ft/bag) Use the product coverage chart. Paver price ($/sq ft) Set to 0 for quantities only. Base aggregate price ($/ton) Bulk supplier price. Bedding sand price ($/cu yd) Bulk supplier price. Polymeric sand price ($/bag) Retail price per bag. Edge restraint price ($/linear ft) Perimeter edging cost. Labor price ($/sq ft) Set to 0 for DIY material-only estimate.

Example base1.36 cu yd2.17 tons

Example pavers~495 pcs10x10 patio + waste

Example sand0.34 cu ydbedding layer

Example joint sand2 bagsdepends on joint width

Example for a 10x10 patio before you calculate your own project.

Change the length, width, paver size, or project type to create a supplier-ready order list.

Spacing formula

For rectangular pavers, module area is paver length plus joint width multiplied by paver width plus joint width. Divide patio area with waste by that module area to estimate count.

This method is best for layout planning. For purchasing, many DIY users still order from the face-area count plus waste because cuts, borders, and breakage can offset spacing savings.

Spacing also affects polymeric sand

Wider joints may reduce paver count, but they increase joint fill volume. That can increase polymeric sand usage even when patio area stays the same.

Use the polymeric sand calculator when product coverage depends on joint width and joint depth.

Helpful next step

Use the complete paver material calculator when you want one combined order list for pavers, base, bedding sand, polymeric sand, edging, and cost. Use the focused calculators when you need to tune one material at a time.