yardmath. My project0
Hardscape · FREE PROJECT TOOL

Retaining wall blocks calculator

Measure your project. Make a clearer plan.
Estimate standard block quantities for a straight wall face.

Your measurements

ft
ft
in
in
%
USD

All prices are USD and supplied by you. Starting quantities are examples.

BEHIND THE NUMBERS

Clear math. Better decisions.

Courses = ceiling(wall height ÷ block height). Blocks per course = ceiling(wall length ÷ block length). Add allowance and round up.

A worked example

A 20 ft wall, 3 ft total height, with 16 × 6 inch block modules needs 15 blocks per course × 6 courses = 90 blocks before extra.

Before you order

  • Estimate standard block quantities for a straight wall face.
  • Excludes caps, corners, base, drainage, reinforcement, and engineering. Enter all buried courses; this quantity tool does not establish a safe wall design.

Good questions.

Where do the prices come from?

You enter actual supplier prices. A blank price is unknown; enter zero only when that item is free or deliberately excluded. Taxes and installation are excluded unless a field explicitly includes them.

Can I use metric measurements?

Yes. The unit selector converts dimensions and unit prices. Results use whole packages where applicable. Starting dimensions are examples; confirm product specifications before ordering.

KEEP THE PROJECT MOVING

Next in your tool shed.

Hardscape

Gravel

Estimate gravel volume and weight for a path or bed using adjustable density, depth, and local supplier prices.

Volume + weightCalculate Hardscape

Concrete

Estimate concrete volume and whole bags from slab dimensions, allowance, and the yield printed on your product label.

Slabs + bagsCalculate Hardscape

Pavers

Calculate patio paver counts, base volume, and bedding sand from your own dimensions and material assumptions.

Pavers + baseCalculate