Calculator

Area Length (ft)

Area Width (ft)

Coverage per Bag (ft²)

Price per Bag ($)

Bags Needed

Estimated Cost

Coverage per bag depends on paver size and joint width — narrower joints and larger pavers stretch a bag further, wider joints and small pavers use it up faster. Manufacturer charts for a 50 lb bag commonly range from about 50 to 150 ft²; 80 ft² is used here as a middle-of-the-road default, so check your specific product's chart before ordering.

Enter the paved area and bag coverage to calculate bags needed and cost.

How to Use the Polymeric Sand Calculator

Enter the paved area's length and width, set coverage per bag to match your product's chart, and add a price per bag for an estimated cost.

bags needed = area (ft²) ÷ coverage per bag (ft²)

Coverage per bag isn't a fixed number the way a bag of concrete's yield is — it depends on both the paver size and the joint width between them. Large pavers with narrow joints leave less gap to fill, so a single 50 lb bag stretches further; small pavers with wide joints chew through bags faster because there's simply more joint volume per square foot of surface. Manufacturer coverage charts for a 50 lb bag commonly range from around 50 ft² up to 150 ft² depending on that combination.

This Polymeric Sand Calculator defaults to 80 ft² per bag as a middle-of-the-road planning figure, but the product's own coverage chart — printed on the bag or on the manufacturer's site, cross-referenced against actual joint width — is the number worth using for a real order. Buying one bag short on a polymeric sand job usually means a second delivery, since colors can vary slightly between production batches.