Convert MPa to gigapascals. 1 MPa equals 0.001 gigapascals. Free converter with formula, examples and conversion table. Convert megapascal (MPa) to gigapascal (GPa). Free online pressure conversion calculator. One Megapascals is equal to 0.001 Gigapascals, so use this simple formula to convert: Megapascals = Gigapascals × 0.001. For example, here's how to convert 500 Megapascals to Gigapascals using the formula above. 500 MPa = (500 × 0.001) = 0.5 GPa. 1 Megapascals is equal to how many Gigapascals? Convert megapascals to gigapascals instantly. Free MPa to GPa pressure conversion with formulas, tables, and examples. Instant free online tool for megapascal to gigapascal conversion or vice versa. The megapascal [MPa] to gigapascal [GPa] conversion table and conversion steps are also listed. Also, explore tools to convert megapascal or gigapascal to other pressure units or learn more about pressure conversions. Use this tool to convert mPa to GPa. Convert Megapascals to Gigapascals with conversion calculator. See how to convert Megapascals to Gigapascals and check the conversion table.