Pipe Formulas These calculators are for general information only and are NOT intended for design! Basic Conversion Kg./mm2 to P.S.I.Joules to Foot PoundsMegapascals to P.S.I.Meters to FeetMillimeters to Inches Input Output Convert partial size Charpy result to full size equivalent Partial Charpy Value: ft. lb. Sample Size: mm Full-size equivalent: Calculate square feet per linear foot of pipe Pipe OD Result Sq. ft. per lf. Calculate 100% of Specified Minimum Internal Yield Strength of pipe Min. Yield Pipe OD Wall Thickness inch Result PSI SMYS Calculate Weight Per Foot Pipe OD Wall Thickness inch Result