Roof Tile Quantity Calculator

Roof tile quantity calculator per square foot for clay and concrete roof tiles. Use the free Roof Tile Quantity Calculator below — enter your values and get instant results, right in your browser. Tiles = roof area (sq ft) × coverage rate (8 for clay country, 6 for Mangalore, 2 for concrete interlocking), × 1.05 for 5% breakage wastage.

How to use the Roof Tile Quantity Calculator

Clay roof tiles are counted per square foot, not per piece at the planning stage, and the rate changes a lot between small country tiles and large interlocking concrete ones. This roof tile quantity calculator per square foot applies the right coverage rate for each tile type — 8 per sq ft for traditional clay country tiles, 6 for Mangalore pattern, 2 for big concrete interlocking tiles — and adds 5% for breakage. Measure the sloped roof area and order once, correctly.

  1. Measure the sloped roof area in square feet (length × slope width of each face).
  2. Enter it in the Roof area field.
  3. Select your tile type from the dropdown.
  4. Click Calculate and order the With 5% wastage figure.

Formula

Tiles = roof area (sq ft) × coverage rate (8 for clay country, 6 for Mangalore, 2 for concrete interlocking), × 1.05 for 5% breakage wastage.

Worked example

A 500 sq ft sloped roof with clay country tiles: 500 × 8 = 4,000 tiles. With 5% wastage that is 4,200 tiles to order from the kiln — roughly 4 to 5 tractor trolleys depending on stacking. Confirm the kiln counts the extra 5% at the same rate, since some dealers charge breakage separately.

Frequently asked questions

About 8 traditional clay country tiles cover one square foot including overlap; Mangalore pattern tiles need about 6.

Measure the actual sloped surface — tiles cover the slope, so the flat plan area would under-order.

Clay tiles chip in transport and cutting around ridges and valleys wastes pieces; 5% covers normal losses.

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