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.
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All you need to do is enter your NIF number, and Calc-DNI will automatically reveal the letter that corresponds to those eight digits.
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