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Patio Paver Base Calculator · Free calculator

12x12 Patio Paver Base Calculator

A 12' × 12' paver patio (144 sq ft) needs 2.04 yd³ — about 2.86 tons — of compacted gravel base at 4", plus 0.49 yd³ of bedding sand at 1". Here's every layer, bag count and paver quantity for 12x12.

Quick answer

4" gravel base
2.04 yd³ · 2.86 t
6" gravel base
3.07 yd³ · 4.29 t
1" bedding sand
0.49 yd³ · 27 bags
4x8 pavers (+10%)
713
Edge restraint
48 LF
Base rock (bulk) @ 4"
$124

▍Gravel Calculator

Material
ft
in
ft
in
in
Waste Factor
$
L = 12' 0"W = 12' 0"D = 4"
Cubic Yards
2.04yd³
incl. 15% waste · Bulk delivery: order 2.25 yd³
Cubic Feet
55.20ft³
Area
144.0sq ft
Weight
2.86tons
Weight
5,724lbs
Gravel bags needed
  • 0.5 cu ft bag (~50 lb) (0.5 ft³ yield)111

Gravel base for a 12x12 paver patio

144 sq ft, +15% for compaction. Crushed stone / Class II road base ≈ 1.4 tons per yd³.

Base depthUseCubic yardsTons0.5 cu ft bagsBulk est.
4"Patio / walkway (foot traffic)2.04 yd³2.86111$124
6"Patio on clay or in frost zones3.07 yd³4.29166$179
8"Paver driveway (vehicles)4.09 yd³5.72221$234

Sand, pavers & edging for 12x12

ItemQuantityNotes
Bedding sand 1" (concrete sand)0.49 yd³ / 0.66 tons27 × 0.5 cu ft bags
Standard 4" × 8" pavers7134.5 per sq ft + 10% cuts
Polymeric joint sand (50 lb)3~60 sq ft per bag
Edge restraint48 LF6 × 8' sections, spikes every 12"
Geotextile fabric159 sq ftextend 6" past edges
Excavation depth @ 4" base7.375"4" base + 1" sand + 2-3/8" paver

How the math works

  1. Area: 12 ft × 12 ft = 144 sq ft
  2. Base volume @ 4": 144 × (4 ÷ 12) = 48.00 cu ft
  3. Add 15% for compaction: 48.00 × 1.15 = 55.20 cu ft = 2.04 yd³
  4. Tons: 2.04 yd³ × 1.4 t/yd³ = 2.86 tons
  5. Sand @ 1": 144 × (1 ÷ 12) × 1.10 = 13.20 cu ft = 0.49 yd³
  6. Pavers: 144 sq ft × 4.5 × 1.10 = 713 pavers

Trade pro tips

  • A 12x12 patio (144 sq ft) at 4" base needs about 2.86 tons of base rock — a pickup can haul it in 1–2 trips.
  • Excavate base depth + 1" sand + paver thickness (2-3/8" for standard pavers).
  • Compact the base in 2" lifts with a plate compactor — one thick lift never gets dense.
  • Screed bedding sand to exactly 1". Thicker sand causes pavers to rut and shift.
  • Use edge restraint on every side not held by a wall or slab, spiked every 12".

Frequently asked questions

How much gravel base do I need for a 12x12 paver patio?

At 4" compacted: 2.04 yd³ (2.86 tons). At 6": 3.07 yd³ (4.29 tons). For a paver driveway at 8": 4.09 yd³ (5.72 tons). All include 15% for compaction.

How much sand do I need for 12x12 pavers?

A 1" bedding layer for 144 sq ft is 13.20 cu ft — 0.49 yd³, about 0.66 tons or 27 bags of 0.5 cu ft sand. Add ~3 bags of polymeric sand for the joints.

How many pavers for a 12x12 patio?

About 713 standard 4" × 8" pavers (4.5 per sq ft × 144 sq ft + 10% for cuts). Herringbone and other angled patterns can need 15% extra.

How deep should I dig for a 12x12 paver patio?

About 7-3/8" for a patio: 4" gravel base + 1" sand + 2-3/8" pavers. On clay or in frost zones use a 6" base (about 9-3/8" dig), which takes 3.07 yd³ of gravel for 12x12.