About CalcAJob

CalcAJob makes free, fast calculators for the material questions that come up on every job: how much gravel to order, how many board feet to buy, how many bundles of shingles a roof takes.

Every calculator shows its formula and a worked example, so you can check the math yourself.

Accuracy

Results are estimates based on the numbers you enter and typical material data. Material weights vary by supplier, and building codes vary by location. Confirm quantities with your supplier, and follow local codes and a qualified professional's advice for structural and electrical work.

Who runs it

CalcAJob is a brand of F. W. Steward, LLC, an Indiana company.