The Problem
Typing IDs by hand is one of those small tasks that goes wrong more often than it should. Once the list grows, it becomes easy to skip a number, duplicate one, or forget the format you used on the previous row.
This challenge uses the row number to generate IDs automatically. That gives us a simple ID in column C, a padded version in column D, and two summary checks at the bottom.
How We Solve It
The base pattern is ROW()-1. Because the first data row starts on row 2, subtracting 1 makes the first generated number equal to 1. From there we attach a prefix like EMP- and optionally pad the number with zeros.
Method 1: Basic IDs with ROW
Method 1: Use the row number to generate a simple running ID.
This is the simplest pattern in the file. ROW() returns the current row number, and subtracting 1 makes row 2 become ID 1. Adding the text prefix gives us values like EMP-1, EMP-2, and so on.
This solves the basic numbering problem because each row can create its own ID without manual typing. Once the first formula is copied down, the sequence stays automatic and each employee gets the next number in order.
="EMP-" & ROW()-1
Method 2: Padded IDs with TEXT
Method 2: Add leading zeros so the ID stays aligned and easier to scan.
The padded version uses the same row logic, but TEXT formats the number as three digits. That turns 1 into 001 and keeps the ID list visually consistent as it grows.
This solves the presentation side of the problem. The IDs still come from the row position, but the padded number makes the list look cleaner and more professional when it is sorted, scanned, or exported.
="EMP-" & TEXT(ROW()-1, "000")
Method 3: Spill a full sequence
Method 3: Generate a whole list at once with SEQUENCE in newer Excel versions.
Newer Excel versions can generate whole ID runs with SEQUENCE. That is not required for this challenge, but it is a good next step when you want to build a blank template or a larger auto-generated roster.
This solves a larger setup problem where the sheet needs a full block of IDs at once instead of one row at a time. It is helpful for templates or future rosters, even though this challenge only needs the copied row formulas.
="ID-" & TEXT(SEQUENCE(5), "000")
Function Explanation
1. ROW
ROW returns the row number of the current cell. Here it acts like a built-in counter for the ID pattern.
Learn more this functionROW
2. TEXT
TEXT formats the numeric part so it always shows three digits. That keeps the padded IDs neat and consistent.
Learn more this functionTEXT
3. MAX
MAX is used in the summary to return the largest issued number. Since the IDs are sequential, that tells us the last ID number currently in the sheet.
Learn more this functionMAX
The small detail that matters most is the offset. Because the data starts on row 2, subtracting 1 keeps the first generated ID at 1 instead of 2.
Generate the simple IDs in column C, the padded IDs in column D, and then finish the summary so the sheet shows the last issued number and the total number of people in the list.