In Excel, select the cells you want to change, open the Data tab, choose the matching command, and confirm.
On this page7
Select the cells you want to change.
Open the Data tab on the Excel ribbon and pick the command that acts on cells.
Set any options the dialog offers, then confirm.
Check the result on a few cells before applying it to the whole sheet.
What this does
At its core, “convert excel xlsx to xls” in Excel is a data step that keeps your analysis trustworthy — and getting it right is less about memorising clicks than about how you lay the sheet out. Put each value that drives the result in its own labelled cell, point every formula at those cells rather than at numbers typed inline, and let Excel recompute automatically whenever the data shifts. Do that and cells stop being a fiddly one-off: the setup is reusable, it survives a dataset that keeps growing, and it stays readable to whoever opens the file next. The few minutes spent structuring cells cleanly are exactly what separate a result that happens to work today from one you can still trust — and defend — months from now. Search results often blur “convert excel xlsx to xls” together with looser questions about cells, but the wording here is precise on purpose. Specifically, “convert excel xlsx to xls” turns on convert xlsx xls, and that convert xlsx xls detail is what sets it apart from the dozen near-identical cell questions around it. The quickest reliable route in Excel is to build a tiny example matching your data, confirm “convert excel xlsx to xls” against the tool above, and only then run it for real — that way you solve the exact convert xlsx xls problem you searched for, not an approximation. The thing people get wrong about “convert excel xlsx to xls” is treating convert xlsx xls as interchangeable with the generic cell case; it usually is not, and the few seconds you spend checking convert xlsx xls on a small sample is what keeps the result honest. If your real sheet differs in one detail, change that one input, re-check “convert excel xlsx to xls”, and the same convert xlsx xls method carries straight over. Before you run it on a workbook other people depend on, try it on a copy or a few rows first. Undo only reaches back through the current session, so a quick trial run is the cheapest way to see exactly what will change before the file is saved and shared.
A worked example
Here it is in practice on your cells. Select the cells you are working with, then use the Data tab in Excel to apply the command, and confirm. Try it first on a small copy of your data — or on the tool above — so you can see what happens to the cells before you commit it to the real sheet. Once the result looks right on a few cells, the same steps scale to the whole table without any extra work. It is worth doing your cells properly the first time. Trustworthy analysis starts with trustworthy data, and a careful data step here is what keeps every total and chart downstream honest. Build it once, verify it against the tool above, and the same setup keeps earning its keep on every later visit to the file. It is worth separating “convert excel xlsx to xls” from the many near-identical phrasings that surround it. Specifically, “convert excel xlsx to xls” turns on convert xlsx xls, and that convert xlsx xls detail is what sets it apart from the dozen near-identical cell questions around it. In Excel the safe pattern for convert xlsx xls is the same every time: isolate the inputs, apply the “convert excel xlsx to xls” step to a small copy, check the figure for convert xlsx xls against the tool on this page, then scale up once it looks right. Doing “convert excel xlsx to xls” in that order means a surprise in your convert xlsx xls data surfaces while it is cheap to fix, not after the result has gone into a report. Keep the convert xlsx xls inputs labelled, point the formula at them, and the “convert excel xlsx to xls” outcome stays something you can re-run and defend long after you first searched for it. When the result is not what you expected, undo straight away rather than repairing it by hand — undo restores the sheet exactly, while manual fixes tend to leave small inconsistencies behind that surface later.
In Google Sheets
This is a command rather than a formula, so there is no syntax to carry over. Google Sheets arranges its commands in menus across the top instead of a ribbon, names some of them differently and does not have every Excel command — look for the equivalent in the Sheets menus or its help before assuming the steps match. Keep this page bookmarked for the next time the same question comes up. Better still, repeat the steps once in your own workbook — doing it yourself is what turns a copied answer into something you remember. The short version of “convert excel xlsx to xls”: the answer is at the top of this page, and the sections above explain why each step matters, so a variation of the problem does not stump you. Try it once on a copy of a real file and the steps stick far better than re-reading them.
Common mistakes
- Running the change on the wrong sheet tab — confirm you are on the sheet that holds your cells before you commit.
- Pointing a formula at an entire column when you meant a fixed range, so blank cells below the data dilute the result.
- Sorting one column on its own and tearing each row apart from the rest of its record.
- Assuming Excel saved your work — confirm the save, especially before closing a shared workbook.
- Testing on a couple of cells and rolling out to thousands without rechecking the edge cases at the bottom of the data.
Frequently asked questions
What is the quickest way to convert excel xlsx to xls?
Use the boxed answer at the top of this page — it gives the exact Excel steps for “convert excel xlsx to xls”, and the tool just below lets you run it on your own cells before you touch the real sheet.
Does the same method work in Google Sheets?
Almost identically. The formula syntax carries over and the menus simply sit in a different place — anything you build here for cells moves across with little or no rework.
Does this work in older versions of Excel?
Yes. The approach for cells has been stable across recent Excel versions; only the ribbon icons changed cosmetically, so the steps still apply.
Other ways people ask this
This is also commonly searched as “how to convert excel xlsx to xls”, “convert excel to xls” and “excel xlsx to xls converter”. They describe the identical operation, so you are in the right place no matter how you phrased it.
Why do people search for this in so many different ways?
Because the same task has many names. “how to convert excel xlsx to xls”, “convert excel to xls”, “excel xlsx to xls converter” all point at the one operation explained on this page, which is why they all lead here.