How much gravel for a 16 ft × 20 ft?

A 16 ft × 20 ft gravel project is pre-filled below. Adjust any value to match your exact job.

Quick answerA 16 ft × 20 ft gravel project needs 4.15 tons — buy 4.36 to cover waste — about $174.4–$283.4 in materials (US national average, 2026).
Your project
Standard size shown by default. Change any value — the answer recomputes instantly.
You need
4.36tons
Exact need: 4.15 tons · plus 5% waste allowance
Material cost
$174.4–$283.4
Installed (US avg)
$501–$725
Shopping list
Items to buy with quantity and price range
ITEMQTYPRICE RANGE
tons4.36$174.4–$283.4
Estimated material total$174.4–$283.4
Alternative buy formats
  • 3.11 × cubic yards — $108.85–$186.6

16 ft × 20 ft at different depths

16 ft × 20 ft footprint of gravel / crushed stone
DepthYou needBuy (with waste)Material cost
1″1.38 tons1.45 tons$58 – $94.25
2″2.77 tons2.9 tons$116 – $188.5
3″4.15 tons4.36 tons$174.4 – $283.4
4″5.53 tons5.81 tons$232.4 – $377.65
6″8.3 tons8.71 tons$348.4 – $566.15