How Much Sand for a 4x100 Walkway?
How much sand for a 4x100 walkway is a quick volume problem. 400 square feet at 3 inches comes to 3.70 cubic yards. Sand usually weighs about 1.3 to 1.5 dry tons per cubic yard, so plan on roughly 5.0 tons.
Volume and tonnage calculator →The math for a 4x100 walkway
- Area: 4 × 100 = 400 sq ft.
- Depth in feet: 3 ÷ 12 = 0.250 ft.
- Cubic feet: 400 × 0.250 = 100.0 cu ft.
- Cubic yards: ÷ 27 = 3.70 yd³.
- Tons: × 1.35 = 5.0 tons.
The volume and tonnage calculator does this for any size.
Sand needed by depth
| Depth | Cubic yards | Tons (approx.) | Tons +10% |
|---|---|---|---|
| 1 in | 1.23 | 1.7 | 1.8 |
| 2 in | 2.47 | 3.3 | 3.7 |
| 3 in | 3.70 | 5.0 | 5.5 |
| 4 in | 4.94 | 6.7 | 7.3 |
About sand
Sand weight changes a lot with moisture. Damp sand can weigh noticeably more per yard than dry sand, so a ton of wet sand covers less area than the same ton dry. Ask your supplier for their own tons-per-yard figure, since stone source and moisture shift it.
Preparing the walkway
Dig the path a few inches below grade, compact the bottom, add fabric if needed and install edging on both sides so the material stays on the walk. For foot traffic, the depths in the table above are a reasonable starting range.
Ordering tips
- Round up. Compaction and uneven ground eat material. Adding about 10 percent is common.
- Delivery size. 5.5 tons fits in a single typical dump truck load; small loads may carry a delivery fee. See how many tons of gravel in a dump truck.
- Bulk vs bags. At this size bulk delivery is usually the practical choice.
- Where it drops. Have the truck dump as close to the walkway as firm ground allows.
When to choose sand
Works well for:
- Paver and flagstone bedding
- Leveling under above-ground pools (with the right product)
- Filling joints and backfilling pipe
Think twice for:
- Driveway bases, since sand shifts under load
- Steep areas exposed to runoff
- Thick layers under pavers, which settle unevenly
Quick reference numbers
- Per inch over 100 sq ft: about 0.42 tons of sand (0.31 cubic yards).
- Per inch over 1,000 sq ft: about 4.2 tons.
- Another size for comparison: a 8x16 area at 4 inches takes about 2.1 tons.
- Weight used here: about 1.35 tons per cubic yard.
Where estimates go wrong
- Assuming every supplier uses the same weight. Two yards selling the same product name can quote different tons per yard.
- Ignoring the base. A thin surface layer over soft soil fails early no matter how much material is on top.
- Mixing up cubic yards and tons. Yards are volume, tons are weight; convert with the product’s weight per yard.
- Using inches as if they were feet. Depth has to be divided by 12 before you multiply; skipping that step inflates the order twelvefold.
Questions people ask
How many tons of sand for a 4x100 walkway?
About 5.0 tons at 3 inches deep, or 5.5 tons with 10 percent extra.
How many cubic yards is a 4x100 walkway at 3 inches?
About 3.70 cubic yards.
How much does a cubic yard of sand weigh?
Usually around 1.3 to 1.5 dry tons, depending on stone size, fines and moisture.
How deep should sand be for a walkway?
The table above shows 1 to 4 inches. Shallower depths suit top dressing; deeper depths suit new installs and heavier use.
How many square feet is 4x100?
400 square feet.
Related guides
- How Much Does a Ton of Sand Cover?
- Tons to Cubic Yards for Gravel: Conversion Chart
- How Many Tons of Gravel in a Dump Truck? Loads and Coverage
- How Much Does a Ton of Gravel Cover? Depth Chart
- How Much Sand for a 4x60 Walkway?
- How Much Sand for a 4x75 Walkway?
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