BitumenCalcPro is a free online engineering calculator built for civil engineers, paving contractors, quantity surveyors, project managers, and students. It helps users calculate: • Bitumen quantity • Asphalt mix weight • Aggregate weight • Project volume • Material cost estimation • Metric & Imperial unit conversions Unlike spreadsheets, BitumenCalcPro provides fast, transparent calculations using industry-standard engineering formulas. No registration required. Free to use.