Estimates only
The calculators on this site give estimates for planning. Real quantities depend on your site, how you measure, the material your supplier delivers, moisture, compaction and waste. Check quantities with your supplier before you order.
Not professional advice
Nothing here is engineering, building, legal or agronomy advice. Block counts are not a structural design. Retaining walls, slabs and anything that holds back soil or carries loads may need a permit, a licensed engineer or a contractor; check with your local building department. Call 811 before you dig. Follow product labels and local rules for fertilizer.
No warranty
The site is provided as is, without any warranty. Densities, bag sizes and default prices are checked about once a year and may be out of date or differ where you live. Default prices are examples, not quotes. To the extent the law allows, we aren't liable for losses from using the site or relying on its results.
Affiliate links and ads
Some links are affiliate links: if you buy through them we may earn a commission, at no extra cost to you. As an Amazon Associate we earn from qualifying purchases. Links are chosen because they fit the job, not because of a payment, and we don't review or endorse specific products. Ads may appear on the site.
Trademarks
Product, retailer and brand names are used only to describe what a size or link refers to. This site isn't affiliated with or endorsed by any of them.