Mattally builds straightforward material calculators for home and trade projects.
Our calculators turn measurements into the quantities suppliers actually sell: cubic yards, tons, bags, boxes, gallons and rolls.
Each estimate shows the assumptions behind it, including density, coverage and waste allowance. We test the calculation code against worked examples, but real materials and job sites vary.
We write for someone planning a real purchase, not for a search engine. Guidance is kept specific to the material and the job. When local codes, product instructions or supplier measurements take priority, we say so.