Polymeric Sand Calculator
Find how many 50 lb bags of polymeric sand you need to fill paver joints, by joint width or your bag's coverage.
Change the values and press Calculate to work out your own figures.
From length and width
Enter the length and width.
Show the working
- bags = area ÷ coverage per bag, rounded up
From an area
Enter the area.
Show the working
- bags = area ÷ coverage per bag, rounded up
How to use it
Enter the length and width. Enter the area.
Lengths can be decimals, fractions or tape entries such as 12' 6 1/2" (in feet or inches). Prices are optional.
Key facts
bags = area ÷ coverage per bag, rounded up
Joints
Wider joints, thicker pavers and smaller pavers all take more sand; gaps of 2 in or more are better filled with gravel.
Questions
How many bags of polymeric sand for 300 sq ft?
4 bags for tight joints (about 87.5 sq ft a bag); 7 for 1/4–3/8 in joints.
Formulas
bags = area ÷ coverage per bag, rounded up
Sources
Limitations
- Material densities are typical values (the midpoint of the commonly published range); real loads vary with moisture, grading and compaction, so check with your supplier or type in their density.
- Tank results are the geometric volume; real tanks have wall thickness and fittings.