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Gravel for 100 sq ft
Gravel for 100 ft² at 4 in deep · 67 × 0.5 ft³ (≈50 lb) bag
Gravel for 100 ft² by depth
| Depth | yd³ | ft³ | Bags | Tons | Bulk / bagged cost |
|---|---|---|---|---|---|
| 2 in | 0.62 | 16.7 | 34 | 0.86 | $31 / $187 |
| 3 in | 0.93 | 25.0 | 50 | 1.30 | $46 / $275 |
| 4 in | 1.23 | 33.3 | 67 | 1.73 | $62 / $368 |
| 6 in | 1.85 | 50.0 | 100 | 2.59 | $93 / $550 |
Driveways usually need 4–6 in of compacted base plus a top layer; paths and patios 2–4 in. Gravel weighs about 1.4 tons per cubic yard.
How it is calculated
Volume = area × depth: 100 ft² × (4 ÷ 12) ft = 33.3 ft³; ÷ 27 = 1.23 yd³. 100 ft² is, for example, a 10.0 × 10.0 ft square or a 10 × 10 ft strip.
FAQ
How much gravel do I need for 100 square feet?
At 4 in deep, 100 ft² needs 1.23 cubic yards (33.3 ft³) – about 67 × 0.5 ft³ (≈50 lb) bag. That weighs roughly 1.7 tons.
Is it cheaper to buy gravel in bulk or bags for 100 sq ft?
At typical prices ($50/yd³ bulk vs $5.50 per bag) bulk costs about $62 versus $368 in bags, before delivery. Bulk delivery usually wins above about 1 cubic yard.
Other areas: 25 ft² · 50 ft² · 75 ft² · 120 ft² · 150 ft² · 200 ft² · all areas · gravel calculator
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