Inches of water to newtons per square meter converter on this page calculates how many newtons per square meter are in 'X' inches of water (where 'X' is the number of inches of water to convert to newtons per square meter). In order to convert a value from inches of water to newtons per square meter (from inH2O to N/m²) simply type the number of inH2O to be converted to N/m² and then click on the 'convert' button.