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Gravel Driveway Calculator · Free calculator

8x8 Gravel Driveway Calculator

Covering 8' × 8' (64 sq ft) with 4" of gravel takes 0.87 cubic yards — about 1.22 tons — with 10% extra. A full 3-layer driveway build for 8x8 is 3.04 tons. Depths, layers, truck loads and fabric are below.

Quick answer

4" gravel
0.87 yd³
Weight @ 4"
1.22 tons
3-layer driveway (10")
3.04 tons
Tandem truck loads (15 t)
1
Geotextile fabric
8 sq yd
Est. gravel cost @ 4"
$55

▍Gravel Calculator

Material
ft
in
ft
in
in
Waste Factor
$
L = 8' 0"W = 8' 0"D = 4"
Cubic Yards
0.87yd³
incl. 10% waste · Bulk delivery: order 1.00 yd³
Cubic Feet
23.47ft³
Area
64.0sq ft
Weight
1.22tons
Weight
2,434lbs
Gravel bags needed
  • 0.5 cu ft bag (~50 lb) (0.5 ft³ yield)47

Gravel for 8x8 by depth

64 sq ft, 10% waste. Crushed stone ≈ 1.4 tons/yd³, ~$55/yd³ delivered.

DepthUseCubic yardsTonsTruck loadsBulk est.
2"Top dressing / refresh0.43 yd³0.611$28
4"Top layer (#57 stone)0.87 yd³1.221$55
6"New pad on firm soil1.30 yd³1.831$83
8"New driveway on soft soil1.74 yd³2.431$96

3-layer gravel driveway build for 8x8

The standard US build for a driveway that won’t rut: big stone base, mid-size stone, fines on top.

LayerDepthCubic yardsTons
#3 stone (1"–2½") base4"0.87 yd³1.22
#57 stone (¾"–1") middle4"0.87 yd³1.22
Crusher run / dense grade top2"0.43 yd³0.61
Total10"2.17 yd³3.04

How the math works

  1. Area: 8 ft × 8 ft = 64 sq ft
  2. Volume @ 4": 64 × (4 ÷ 12) = 21.33 cu ft
  3. Add 10%: 21.33 × 1.10 = 23.47 cu ft
  4. Cubic yards: 23.47 ÷ 27 = 0.87 yd³
  5. Tons: 0.87 × 1.4 = 1.22 tons
  6. Truck loads: 3.04 tons ÷ 15 tons per tandem = 1

Trade pro tips

  • At 4" deep, 8x8 takes 1.22 tons — a single dump truck delivery covers it.
  • Build in layers: 4" of #3 (2"–3") stone, 4" of #57, then 2" of crusher run / dense grade on top.
  • Lay non-woven geotextile over clay soil first — it stops stone from sinking.
  • Crown the driveway ½" per foot so water sheds to the sides.
  • Spread with a box blade and compact each layer before the next.

Frequently asked questions

How many tons of gravel do I need for a 8x8 driveway?

At 4" deep: 1.22 tons. At 6": 1.83 tons. A complete 3-layer driveway (4" #3 + 4" #57 + 2" crusher run) is 3.04 tons. All include 10% extra.

How many cubic yards of gravel for 8x8?

2": 0.43 yd³; 4": 0.87 yd³; 6": 1.30 yd³; 8": 1.74 yd³. 8x8 is 64 sq ft.

How many truck loads of gravel for a 8x8 driveway?

A tandem dump truck carries about 15 tons. 8x8 at 4" (1.22 t) is 1 load; the full 3-layer build (3.04 t) is 1 load.

How much does a 8x8 gravel driveway cost?

Stone alone at 4" is about $55 (~$55/yd³). A 3-layer build runs roughly $120 in material plus 8 sq yd of fabric; delivery and grading are extra.