How many pavers do you need for a 400 sq ft patio?

A 400 sq ft patio needs 1,980 brick pavers (4×8 in) including 10% waste, on 7.4 tons of base gravel (4 in) and 1.7 tons of bedding sand (1 in).

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Pavers (4×8 in)1,980
Base gravel7.41 tons (4.94 cu yd)
Bedding sand1.67 tons (1.23 cu yd)
Sand in 0.5 cu ft bags67
Patio area400 sq ft
How many pavers do you need for a 400 sq ft patio — diagram

Pavers for 400 sq ft by paver size

Paver sizeExact+10% waste+15% (herringbone)
4×8 in (brick)1,8001,9802,070
6×6 in1,6001,7601,840
6×9 in1,0671,1741,227
12×12 in400440460
16×16 in225248259
24×24 in100110115

400 sq ft is about the size of a 20×20 entertaining patio.

Base and sand for 400 sq ft

  • 4-inch gravel base: 4.94 cu yd ≈ 7.4 tons
  • 6-inch gravel base (clay or wet soil): 7.41 cu yd ≈ 11.1 tons
  • 1-inch bedding sand: 1.23 cu yd ≈ 1.7 tons, or 67 bags of 0.5 cu ft

Base gravel compacts, so many installers add 10–15% to the base quantity.

The math (4×8 pavers)

400 sq ft × 1.10 × 144 ÷ (4 × 8) = 1,980 pavers 400 × 4 in ÷ 12 ÷ 27 = 4.94 cu yd base

Common questions

How many pavers for 400 square feet?

1,980 pavers of 4×8 in with 10% waste, or 440 pavers of 12×12.

How much gravel for a 400 sq ft paver patio?

7.4 tons (4.94 cu yd) for a 4-inch base.

Want the full method, tips and other sizes? See the paver calculator guide.

Last reviewed November 1, 2026. Results are estimates — confirm with your supplier.

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