Did you know that Excel has got limitations? You can enter maximum of 1,048,576 rows and 16,384 columns. That means you can add maximum of 17,179,869,184 different values in one sheet of Excel file. On the world there are living about 7,782,620,000 people. That means you can sleep calmly. If you are planning to add name of each person on the planet it can by done in one sheet of Excel. 🙂