Retaining Wall Blocks Calculator
A free, browser-based calculator. Runs entirely in your browser — no sign up, nothing stored.
100% FreeRuns in your browserBasic
Enter Values
Enter your values and press Calculate to see results.
How to use this calculator
- Enter the wall size and block size.
- Press Calculate.
How it works
Blocks per row = wall length ÷ block length; rows = wall height ÷ block height; multiply for the total.
Worked example
10 m × 1 m with 400×200 mm blocks. = 125 blocks.
Related tools
Tip: Enter any known values to calculate the remaining results.
All calculations run in your browser. Your inputs are never saved or transmitted.