Conversion Formulator is a comprehensive program to calculate any technical or professional conversion you may need. The section with Area Formulas includes formulas for everything from barrels, cones, cylinders and much more. There are 22 BTU Conversions; 17 Cubic Conversions; Fractions to Decimal Conversions; 15- Flow Conversions; 10 ft. to lbs. Conversions; 20 HVAC Conversions; 13 Horsepower Conversions; 42 Linear Measures Conversions; Over 30 Liquid Conversions; 10 Power Conversions; 15 pressure Conversions; Three Sand Conversions; 20 Square Measure Conversions; 45 Temperature Conversions; 25 Watts Conversions; and 185-Weight Conversions.