Calculator
Concrete Blocks 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
105 blocks
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
Block Wall Formula
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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Next steps
Need concrete blocks supply coordination for your project?
All building materials under one trusted roof — WhatsApp context or upload your BOQ and we coordinate the lines your site actually needs.
Reply within 24h Mon–Sat on structured requests — indicative timing, not a guarantee.
First steps
- 1.Share photos, a BOQ or voice notes on WhatsApp
- 2.We confirm lines, indicative prices and delivery windows
- 3.Materials leave the yard — coordinated to your site