Topdressing Calculator
Calculate how much material you need to topdress your lawn — for leveling, soil improvement, or organic matter on clay and sandy soils.
Step 1 — Lawn size
Step 2 — Application depth
Recommended for most topdressing applications. Spreads roughly 1 bag per 100 sq ft.
Step 3 — Material type
Cubic yards needed
—cu yd
Cubic feet
—cu ft
Coverage area
—sq ft
— bags
Enter your lawn size and depth above to see the calculation.
Texas A&M AgriLife recommends incorporating organic matter such as compost to improve both tight
clay soils and sandy soils — it increases aeration in clay while boosting water and nutrient retention
in sand. A ½-inch application once or twice a year is a practical starting point.