Construction Estimator

AAC Block Quantity & Labor Calculator

Accurate wall takeoffs for fast material ordering today. Adjust block size, waste, and openings instantly. Convert units, estimate labor, and export your report anytime.

AAC Block Quantity & Labor Inputs
Responsive grid: 3 columns on large screens, 2 on tablets, 1 on mobiles.
White theme Export ready
Wall and opening dimensions follow this selection.
Enter one wall length, then set wall count.
Typical floor-to-slab height is 2.7–3.3.
Use 1 for a single wall segment.
Set 0 if no windows.
Common width: 1.0–1.5.
Common height: 1.0–1.5.
Set 0 if no doors.
Typical: 0.8–1.0.
Typical: 2.0–2.2.
Enter extra opening area (m² or ft²).
Typical AAC waste: 3–8% on site.
Common: 600 mm.
Common: 200 mm.
Pick 75–300 mm by wall type.
Ask your supplier for pack quantity.
Adjust for height, cuts, and access limits.
Used for total labor-hours reporting.
Productivity scales with mason count.
Helpers assist handling, mixing, cleanup.
Enter your local daily rate.
Enter your local daily rate.
Covers supervision, tools, small consumables.
Extra buffer for rework and site delays.
Reset
Notes: Outputs are planning estimates. Always confirm with drawings, block manufacturer specs, and site productivity records.
Formula Used
Block Quantity
Gross area = (Wall length × Wall height) × Wall count
Openings area = (Windows × width × height) + (Doors × width × height) + Other openings area
Net area = Gross area − Openings area
Block face area = (Block length ÷ 1000) × (Block height ÷ 1000)
Blocks (base) = Net area ÷ Block face area
Blocks (incl. waste) = ceil(Blocks (base) × (1 + Waste%))
Pallets = ceil(Blocks (incl. waste) ÷ Blocks per pallet)
Labor
Crew daily area = Productivity (m²/day per mason) × Masons
Labor days = Net area ÷ Crew daily area
Rounded days = ceil(Labor days × 4) ÷ 4
Daily cost = (Masons × Mason rate/day) + (Helpers × Helper rate/day)
Labor cost = Rounded days × Daily cost
Overhead = Labor cost × Overhead%
Contingency = (Labor cost + Overhead) × Contingency%
Grand total = Labor cost + Overhead + Contingency
Tip: If your productivity is tracked in blocks/day, convert it using the block face area and your average cuts and joints.
How to Use This Calculator
  1. Choose meters or feet for all wall and opening dimensions.
  2. Enter one representative wall length and height, then set wall count.
  3. Fill window and door quantities with typical sizes from drawings.
  4. Add any extra opening area for shafts, niches, or large chases.
  5. Set waste percent based on cutting, transport, and handling.
  6. Confirm AAC block size and pallet quantity from your supplier.
  7. Adjust productivity, crew size, and daily rates for your site.
  8. Press Calculate to view results above the form immediately.
  9. Use CSV or PDF buttons to export the current report.
Example Data Table
Scenario Wall (L×H×Count) Openings Block (L×H×T) Waste Output (Blocks) Labor Days
Residential room 6.0×3.0×1 m 2 windows 1.2×1.2, 1 door 0.9×2.1 600×200×100 mm 5% ≈ 143 blocks ≈ 0.50–0.75
Corridor run 18.0×3.0×1 m 3 doors 0.9×2.1 600×200×150 mm 7% ≈ 414 blocks ≈ 1.25–1.75
Partition set 5.0×2.7×4 m 4 doors 0.8×2.1 600×200×75 mm 4% ≈ 430 blocks ≈ 1.25–2.00
Example outputs are indicative and depend on inputs and rounding.

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Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.