Pounds per square foot to hectopascals conversion calculator above calculates how many hectopascals are in 'X' pounds per square foot (where 'X' is the number of pounds per square foot to convert to hectopascals). In order to convert a value from pounds per square foot to hectopascals (from psf to hPa) simply type the number of psf to be converted to hPa and then click on the 'convert' button.