Disclaimer

OrcaCalc calculators provide estimates for planning and learning. They are not a substitute for professional advice.

• Construction and landscaping: material quantities depend on accurate measurements, compaction, moisture, product density and site conditions. Confirm quantities with your supplier and follow local building codes and manufacturer instructions. Structural work (footings, retaining walls, roofs) should be designed or checked by a qualified professional.
• Grades and GPA: schools and colleges use different scales, weightings and rounding rules. Your school's official transcript and policies always take precedence.
• Costs: prices you enter are used as-is; real quotes include delivery, tax and labour.

We work hard to keep every formula correct (see our editorial policy), but we cannot guarantee results are error-free.