Combine Two Columns of Data in Excel

What this does

Combining columns takes the value from each row of two (or more) neighbouring columns and writes them into a single new column, row by row down the whole table — first name beside last name becomes one full-name column. The ampersand (&) joins the two cells of a row with whatever literal text you put in quotes between them, and you copy that one formula down so every row is combined at once. TEXTJOIN does the same across a wider band of columns, taking the separator a single time. This is a per-row column operation, quite different from joining a couple of stray cells or visually merging cells into one box. The same idea underpins a lot of everyday Excel work, so the few minutes spent getting it right here pay back across every sheet you build afterwards. Treat it as a pattern, not a one-off, and it stops being something you look up and starts being something you reach for. The difference between a quick fix and a sheet you can trust is the extra minute you spend validating “combine two columns of data in excel”. Start on a copy or a tiny sample, keep the affected columns visible, and compare the result with the tool above before you touch the real workbook. When a formula is involved, keep the inputs labelled beside it, reference cells instead of typing values, and apply number formatting only after the result checks out. The point is a text operation that turns messy entries into clean, usable data, but the practical win is that someone else can open the file and understand what happened without asking you.

A worked example

Column A holds first names and column B holds last names, with "Ada" in A2 and "Lovelace" in B2. In C2 type =A2&" "&B2 and press Enter: C2 reads "Ada Lovelace", the " " supplying the space between them. Double-click the fill handle and the formula copies down so every row of column C combines its A and B. For three columns at once, =TEXTJOIN(" ",TRUE,A2:C2) joins A2, B2 and C2 with single spaces. No formula at all? Type the first combined result by hand, then press Ctrl+E (Flash Fill) and Excel fills the rest from the pattern. Combining columns is how you fold scattered fields into the single column a mail merge, import or lookup expects — first + last into full name, street + city into one address line. It is the everyday inverse of splitting one column into several. A practical tip before you scale it up: build it once on a small block of test data, confirm the number against the tool on this page, and only then point it at your real sheet. That one habit catches almost every mistake while it is still cheap to fix, long before a wrong figure reaches a report or a colleague.

In Google Sheets

If you are in Google Sheets rather than Excel, the good news is that the formula shown here is identical and the workflow barely changes — menus sit across the top instead of in a ribbon, and a few function names differ slightly, but anything you build here moves across with little or no rework. Keep this page bookmarked for the next time the same question comes up. Better still, rebuild the example once in your own sheet — doing it yourself, with the tool above to check against, is what turns a copied formula into a technique you own. If you take one thing from this page on “combine two columns of data in excel”, make it the habit rather than the keystrokes: set the problem up with labelled inputs, reference those cells, and let Excel do the recomputing. Bookmark the page for the syntax, but do the example once in a blank sheet and check it against the tool above — five minutes of hands-on practice fixes the method in memory far better than re-reading, and it surfaces the small snags while they are still harmless. After that the technique is genuinely yours: faster than searching for it again, and reliable enough to drop into work that other people depend on.

Common mistakes

• Reaching for Merge & Center — that visually fuses cells and keeps only the top-left value, it does not combine the two columns row by row.
• Forgetting the separator, so "Ada" and "Lovelace" run together as "AdaLovelace".
• Deleting the source columns A and B while the new column still holds live =A2&B2 formulas — copy the result and Paste Special ▸ Values first.
• Combining a number or date directly and losing its formatting — wrap it in TEXT() to keep it readable.

Frequently asked questions