The Wall Weight Calculator calculates how much a wall weighs — in total and per square foot — for concrete block (CMU), solid concrete, brick or stone walls.
For a block wall it counts the blocks and multiplies by the weight of one block plus any grout fill. For a solid wall it multiplies the wall volume by the material density. Weight per square foot is useful for checking loads on floors, beams and footings.
Wall Weight Calculator
Weight of a CMU block wall, solid concrete, brick or stone wall — total and per square foot.
Formula
Block wall: W = blocks × (block weight + fill weight per block), where blocks = L × H ÷ block face area
Solid wall: W = L × H × T × density
Weight per area: W ÷ (L × H)
Where L = length, H = height, T = thickness.
How the Calculation Works
Step 1: Count blocks from the wall face area, or find the wall volume for solid walls.
Step 2: Multiply by the weight per block (plus grout) or by the material density.
Step 3: Divide by the wall face area for weight per square foot (psf) or per m².
Variables Explained
| Input | Meaning |
|---|---|
| Weight per block | From the block supplier; varies with size and whether it is normal- or lightweight |
| Grout fill per block | 0 for hollow walls; add grout weight for grouted cores |
| Material (solid walls) | Concrete, brick masonry, stone or timber frame |
Example Calculation
Hollow CMU wall
Given: 20 × 6 ft wall, 8 × 16 blocks weighing 38 lb, no grout
Blocks: 120 ÷ 0.889 = 135
Result: 135 × 38 = 5,130 lb; 5,130 ÷ 120 = 42.75 psf
Solid concrete wall
Given: 20 × 8 ft, 8 in thick, concrete at 2,400 kg/m³ (≈ 150 lb/ft³)
Volume: 106.67 ft³
Result: ≈ 15,982 lb, about 100 psf
Material Density Reference
| Material (as used in the calculator) | Density |
|---|---|
| Concrete | 2,400 kg/m³ ≈ 150 lb/ft³ |
| Brick masonry | 1,920 kg/m³ ≈ 120 lb/ft³ |
| Stone | 2,600 kg/m³ ≈ 162 lb/ft³ |
| Timber frame + drywall (equivalent) | ≈ 800 kg/m³ |
These are typical values; actual weights vary with the product, mix and moisture.
Engineering Assumptions
Results are self-weight only. Plaster, cladding, reinforcement and anything supported by the wall are extra. Use published or supplier values when the weight matters for structural design.
Units and Dimensions
Weights can be shown in lb, kg or tons; weight per area in psf or kPa.
Frequently Asked Questions
How much does a cinder block wall weigh?
Number of blocks × weight per block, plus grout if filled.
How much does a concrete wall weigh per square foot?
About 12.5 lb per inch of thickness for 150 lb/ft³ concrete — an 8 in wall is about 100 psf.
How much does grout add to a block wall?
It depends on the block size and how many cores are filled; enter the fill weight per block.
Why do I need the weight of a wall?
To check what floors, beams and footings must carry, or for transport and lifting.
Does a brick wall weigh more than a block wall?
Per volume, solid brick is denser than hollow block; compare using the calculator with your wall sizes.