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Calculator
Calculate the number of concrete blocks and volume of mortar required for your wall. Get accurate estimates for block laying procurement in Zanzibar.
Instant estimate
0.105 m³ mortar
Wall area: 8.40 m²
Total wall volume: 1.680 m³
Recommended grade: C15
Planning estimate only. Confirm block size and openings before ordering.
Get WhatsApp QuoteHow to Calculate
Blocks = Wall Area × Blocks per m²
Mortar = Total Volume − Block Volume
Multiply the wall length by height to get the wall area. Standard 400mm blocks require 12.5 blocks per m². Calculate mortar volume by subtracting the total block volume from the wall volume.
400mm blocks
12.5 blocks per m²
390mm blocks
15.6 blocks per m²
Example
6m × 2.8m wall = 210 blocks
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