Disclaimer

Last updated: September 24, 2026

Estimates only

All calculators on The Block Calculator give estimates based on standard formulas and the values you enter. Actual quantities can differ because of block tolerances, mortar joints, openings, cutting, breakage, site conditions and installation methods.

Not professional advice

Nothing on this website is engineering, architectural or legal advice. Structural walls, retaining walls, foundations and lifting operations must be designed and checked by qualified professionals and must comply with local building codes.

Prices and product data

Example prices, block sizes, weights and densities are typical values for illustration only. Always confirm specifications and prices with your supplier.

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Questions

If you spot an error, please let us know.