Calc-DNI

You may have had trouble remembering the letter on your DNI (Spanish ID number) on more than one occasion, if you've only memorized the numerical part. Calc-DNI is here to help you figure it out. It's a simple tool that saves you from having to find your physical DNI card in order to remember the letter attached to your number. All you need to do is enter your NIF number, and Calc-DNI will automatically reveal the letter that corresponds to those eight digits.