Topsoil & Lawn Leveling Calculator
Turn your lawn size and depth into cubic yards of topsoil, sand, compost, or leveling mix. Get weight, bag counts, and an honest bulk-vs-bagged cost estimate for your region.
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2 minutesTopsoil volumes, leveling, and cost
One cubic yard is 27 cubic feet, which is roughly 36 of the 0.75 cu ft bags you find at the big box store, or about 54 of the 40 lb bags for topsoil. Past 2 cubic yards, bulk delivery almost always wins on price and back pain.
| Area at 1/4 in deep | Cubic yards | 40 lb bags (topsoil) | Better buy |
|---|---|---|---|
| 1,000 sq ft | 0.8 cu yd | 47 bags | Bagged |
| 2,500 sq ft | 1.9 cu yd | 118 bags | Bulk |
| 5,000 sq ft | 3.9 cu yd | 235 bags | Bulk |
| 10,000 sq ft | 7.7 cu yd | 469 bags | Bulk |
| 20,000 sq ft | 15.4 cu yd | 938 bags | Bulk |
Depth drives everything. These rows assume a standard 1/4 inch topdressing pass; a 1/2 inch leveling pass doubles the volume, and a 2 inch fill for bare ground multiplies it by eight. Enter your real depth in the calculator for exact numbers priced to your region.
Match the material to the job, not the price. Sand levels, compost feeds, topsoil fills. Mixing jobs, like trying to level with compost, causes most of the problems people blame on topdressing.
- Sand, for leveling. It drags smoothly into low spots and never crusts, which is why it is the Bermuda and Zoysia leveling standard. Use masonry or leveling sand, not play sand, and only on warm-season lawns in summer.
- Compost, for feeding. A 1/4 inch pass adds organic matter and microbes and is the best surface to overseed into. It is too spongy for leveling on its own, because it decomposes and the bump comes back.
- Topsoil, for filling. This is the volume material: holes, trenches, raised beds, and anywhere you are reseeding from scratch. Buy screened; unscreened saves a few dollars and delivers rocks.
- 70/30 mix, for both. Seventy percent sand and thirty percent compost levels like sand while feeding a little like compost. It is the go-to for a leveling pass on an established lawn you also want to improve.
Leveling is a slow, repeated process, not a one-time dump. Bury the grass and you start over; feather it in and the lawn grows through in days.
- Mow low and, for deeper dips, core-aerate first so the sand settles into the soil instead of sitting on thatch.
- Spread no more than 1/2 inch per pass. Anything thicker smothers the crowns and kills the grass you are trying to save.
- Drag it in with a leveling rake or lute until the blade tips show back through the sand across the whole area.
- Water lightly, then let the lawn grow and mow once before the next pass. On Bermuda or Zoysia in summer that is about every three to four weeks.
- Repeat until the low spots disappear. Deep areas take a full season of monthly passes, which is normal and far safer than one heavy fill.
How much topsoil do I need for 1,000 sq ft?
At a 1/4 inch topdressing depth, about 0.8 cubic yards (roughly 21 cubic feet), which is around 47 of the 40 lb bags. At a 2 inch fill depth for bare ground, about 6.2 cubic yards. Depth drives everything, so set it first, then enter your ZIP for a bulk-vs-bagged price.
How many bags of topsoil are in a cubic yard?
About 54 of the 40 lb bags, or 36 of the 0.75 cu ft bags. That is why anything past a yard or two is usually cheaper delivered loose by the truckload once you factor in the plastic, the trips, and the lifting.
Should I use sand or topsoil to level a lawn?
Sand, or a 70/30 sand-compost mix, for smoothing bumps on warm-season lawns like Bermuda and Zoysia. Sand does not compact into a crust and drags smoothly into low spots. Topsoil is for filling deeper holes where you will reseed anyway, not for topdressing a living lawn.
How deep should I topdress?
1/4 inch is the standard for a living lawn, and 1/2 inch is the absolute max per pass. Anything deeper buries the grass and kills it. For deep low spots, build up in repeat passes spaced 3 to 4 weeks apart rather than filling all at once.
When should I level a Bermuda lawn?
Late May through July, when Bermuda is growing at full speed and will punch through the sand in under a week. Zoysia is the same window. Never level a dormant or semi-dormant lawn, since it cannot grow back through the material and you will smother it.
Is bulk delivery worth it over bags?
Usually past 1 to 2 cubic yards. Bulk material is two to four times cheaper per yard than bags, but it adds a delivery fee, often $50 to $100, and needs a place to dump the pile. Enter your ZIP in the calculator and it prices both options for your region.