How Much Decomposed Granite for 150 Square Feet?
How much decomposed granite for 150 square feet depends on depth. At 3 inches you need about 1.39 cubic yards, roughly 1.9 tons at 1.35 tons per yard. Each inch of depth over 150 square feet adds about 0.46 yards.
Volume and tonnage calculator →Decomposed granite for 150 sq ft by depth
| Depth | Cubic yards | Tons | Tons +10% |
|---|---|---|---|
| 2 in | 0.93 | 1.2 | 1.4 |
| 3 in | 1.39 | 1.9 | 2.1 |
| 4 in | 1.85 | 2.5 | 2.8 |
Working it out
- 150 sq ft × (3 ÷ 12) ft = 37.5 cubic feet.
- ÷ 27 = 1.39 cubic yards.
- × 1.35 tons per yard = 1.9 tons.
About decomposed granite
DG should be laid in thin lifts, wetted and compacted. Loose DG at a deep depth stays soft and tracks onto shoes. Most suppliers will quote 1.25 to 1.45 tons per yard for this material.
Ordering checklist
- Measure odd shapes in pieces. Split curves and L-shapes into rectangles and add them.
- Add a margin. About 10 percent covers compaction and low spots.
- Bulk or bags. Bulk delivery is the practical choice here.
- Prep first. Remove sod, compact the subgrade and set edging before the stone arrives.
Use the volume and tonnage calculator for any other size.
Where decomposed granite fits
Good uses:
- Garden paths and patios with a natural look
- Around trees and in xeriscape designs
- Stabilized DG for accessible paths
Less suited to:
- Steep grades without a stabilizer
- Areas right outside doors, since fines track in
- Driveways with heavy turning traffic
Quick reference numbers
- Per inch over 100 sq ft: about 0.42 tons of decomposed granite (0.31 cubic yards).
- Per inch over 1,000 sq ft: about 4.2 tons.
- Another size for comparison: a 15x30 area at 3 inches takes about 5.6 tons.
- Weight used here: about 1.35 tons per cubic yard.
Common estimating mistakes
- Forgetting that compaction shrinks loose material. A loose 4-inch spread of a dense-graded stone may finish closer to 3 inches after rolling.
- Mixing up cubic yards and tons. Yards are volume, tons are weight; convert with the product’s weight per yard.
- Ordering exactly the math. Uneven ground and spillage nearly always need a little more than the flat calculation.
- Assuming every supplier uses the same weight. Two yards selling the same product name can quote different tons per yard.
Questions people ask
How many tons of decomposed granite for 150 square feet?
About 1.9 tons at 3 inches deep.
How many cubic yards of decomposed granite for 150 square feet?
About 1.39 yards at 3 inches.
How much decomposed granite for 150 square feet at 2 inches?
About 1.2 tons, or 0.93 cubic yards.
How much does a yard of decomposed granite weigh?
About 1.25 to 1.45 tons.
Should I add extra?
Yes, about 10 percent is a common allowance.
Related guides
- Crushed Stone vs Gravel: Differences and Best Uses
- Tons to Cubic Yards for Gravel: Conversion Chart
- How Much Does a Ton of Gravel Cover? Depth Chart
- How Much Decomposed Granite for 100 Square Feet?
As an Amazon Associate, AsphaltTons.com earns from qualifying purchases. Product links below are sponsored.