FREE ONLINE CALCULATOR

Concrete Block Calculator

Estimate concrete masonry blocks needed for a wall with specified modular block size.

✓ Instant results ✓ Editable inputs ✓ Formula explained

Try the calculator ↓

CONSTRUCTION · TOOLS

MEASURE Enter project dimensions

ESTIMATE Calculate material volume

PLAN Check practical assumptions

CALCULATION TOOL

Concrete Block Calculator

Change any value and calculate again.

Uses the values you enter. No account required.

NASDAQ SYMBOL DIRECTORY

Stock Profit Calculator by Ticker

Choose a listed stock and enter your own buy and sell prices.

AAPL Apple Inc. NVDA NVIDIA Corporation MSFT Microsoft Corporation AMZN Amazon.com, Inc. GOOGL Alphabet Inc. AMD Advanced Micro Devices, Inc. TSLA Tesla, Inc. META Meta Platforms, Inc. PLTR Palantir Technologies Inc. SOFI SoFi Technologies, Inc. INTC Intel Corporation NFLX Netflix, Inc. AAL American Airlines Group, Inc. AAOI Applied Optoelectronics, Inc. AAON AAON, Inc. AARD Aardvark Therapeutics, Inc. ABAT American Battery Technology Company ABCL AbCellera Biologics Inc. ABEO Abeona Therapeutics Inc. ABLV Able View Global Inc. ABNB Airbnb, Inc. ABOS Acumen Pharmaceuticals, Inc. ABSI Absci Corporation ABTC American Bitcoin Corp.

Company names and symbols are taken from a Nasdaq listing snapshot. Stock prices, dividends, and live financial data are not supplied by this calculator.

Browse all 2,731 Nasdaq stock symbols →

ABOUT THIS TOOL

When to use a concrete block calculator

Estimate concrete masonry blocks needed for a wall with specified modular block size.

All assumptions are visible and adjustable. Check rates and underlying data against original sources before making a decision.

HOW IT WORKS

The calculation

Block count = ceil(wall length × wall height × 144 ÷ (nominal block length × nominal block height) × (1 + waste%)).

Read the full guide →

ASSUMPTIONS

Know the limitations

Uses nominal modular sizes with mortar; does not account for openings, reinforcing, lintels or structural design.

Results are estimates derived from your inputs.