About Us

The problem we solve

On site, miscalculation is expensive in both directions. Over-order and the surplus eats the margin; under-order and the job stops while someone drives to the merchant. Most estimating tools are either behind a paywall or too simplistic to trust for real work, so people fall back on rules of thumb.

How we calculate

Every calculator uses industry-standard formulas rather than approximations: the 1.54 dry-volume factor for concrete, D²/162 for rebar weight, and true volumetric subtraction for mortar. Where a constant is open to interpretation, we use the common published value and show the working so you can check it against your own practice.

Who it is for

• Contractors quoting a job and needing a defensible material list.
• DIY builders who want to buy once rather than twice.
• Students bridging classroom formulas and site practice.

A word on accuracy

These tools produce estimates. Compaction, irregular geometry, breakage and local supply conventions all move the real number. Treat the output as a well-founded starting point, not a structural specification, and consult a licensed engineer for anything load-bearing.