Excel CONCATENATE Two Columns

What this does

CONCATENATE glues together text from cells and typed strings into a single value. You list each piece as an argument and it appends them in order, with no spaces added — you insert any separators yourself as " " arguments. CONCATENATE is now legacy: Excel 2016 and later replace it with CONCAT (which also accepts whole ranges), and the & operator (=A1&" "&B1) does exactly the same thing more compactly. All three produce identical results. Most people learn this as a sequence of clicks and forget it by next week; learning it as a pattern instead is what lets you apply it to the next, slightly different version of the problem without starting from scratch. That is the difference this page is trying to make. Treat “excel concatenate two columns” as a small repeatable workflow rather than a one-off click you hope to remember next time. Use a small test block before the live file, so any surprise in the affected columns shows up while it is still harmless. 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. That turns a text operation that turns messy entries into clean, usable data into a method you can reuse, explain, and defend when the workbook leaves your screen.

A worked example

A first name sits in A2 ("Maria") and a last name in B2 ("Klein"). To join them with a space between: =CONCATENATE(A2, " ", B2) returns "Maria Klein". The middle " " argument supplies the space; without it you would get "MariaKlein". The same result comes from =A2&" "&B2 or, in newer Excel, =CONCAT(A2, " ", B2). CONCATENATE remains common in older workbooks, but for new formulas the & operator or CONCAT is shorter and TEXTJOIN handles ranges, so reach for those when you can. 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

Google Sheets handles this almost identically to Excel. The formula syntax above is the same, and the menu lives under a slightly different label rather than a ribbon tab. Use the platform toggle at the top of the page to switch every keyboard shortcut between Windows and Mac, and expect at most cosmetic differences in naming. 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. The short version of “excel concatenate two columns”: the answer is at the top of this page, the tool proves it on your own numbers, and the sections above explain why it holds so the next variation does not stump you. Excel rewards people who reference cells instead of typing values and who keep inputs separate from formulas, because that is what makes a result you can audit months later. Build it once, deliberately, with the live tool as a check, and you convert a one-off lookup into a reusable skill — which is the whole point of learning the why and not just the what.

Common mistakes

• Forgetting the separator argument, so "Maria" and "Klein" run together as "MariaKlein" with no space.
• Expecting CONCATENATE to accept a range like A2:A6 — it joins single items only; use CONCAT or TEXTJOIN to join a range.
• Typing text without quotes, so words like a literal space or label trigger a #NAME? error instead of appearing as text.

Frequently asked questions