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
Strip “excel convert time into number” back and what you are really doing in Excel is a data step that keeps your analysis trustworthy. The specific commands matter far less than one habit: keep the values behind the result in their own labelled cells, reference those cells from every formula, and rely on Excel to recalculate the instant anything moves. Handle cells that way and the work scales from a handful of rows to thousands without breaking, and it stays auditable for the next person to open it — including you in six months. That is the whole gap between a quick fix you redo every single time and a pattern you build once with cells and simply reuse. Search results often blur “excel convert time into number” together with looser questions about cells, but the wording here is precise on purpose. Specifically, “excel convert time into number” turns on convert time into number, and that convert time into number 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 “excel convert time into number” against the tool above, and only then run it for real — that way you solve the exact convert time into number problem you searched for, not an approximation. The thing people get wrong about “excel convert time into number” is treating convert time into number as interchangeable with the generic cell case; it usually is not, and the few seconds you spend checking convert time into number on a small sample is what keeps the result honest. If your real sheet differs in one detail, change that one input, re-check “excel convert time into number”, and the same convert time into number method carries straight over. 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.
A worked example
Walk it through on a sample of your cells first. Highlight the cells you want to act on, open the Data tab in Excel, pick the matching command, and confirm. Rehearse it on a throwaway copy — or on the tool above — so nothing surprises you on the live sheet. When it behaves the way you expect on a handful of cells, the very same clicks cover the entire table. Why bother getting your cells right here? Trustworthy analysis starts with trustworthy data, and a careful data step here is what keeps every total and chart downstream honest. Set it up once with the tool on this page to check your work, and it keeps paying off every time you reopen the sheet. People reach this page for “excel convert time into number” specifically, not for cells in general. Specifically, “excel convert time into number” turns on convert time into number, and that convert time into number detail is what sets it apart from the dozen near-identical cell questions around it. The practical takeaway in Excel is to treat the convert time into number inputs as the thing you label and reference, run “excel convert time into number” on a handful of rows first, and lean on the tool above to confirm the convert time into number outcome before you commit it. What makes “excel convert time into number” trip people up is assuming convert time into number behaves like every other cell task — verify it once on your own numbers and that doubt disappears. Get that loop right for “excel convert time into number” and the same convert time into number approach answers the next, slightly different version of the question without a rebuild. 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. Nothing on this page is behind a login or a download: the exact answer is at the top, and the detail below it is there for when you need it. That is the whole promise here — the answer first, and just enough context to make it stick. If you take one thing from this page on “excel convert time into number”, make it the order of checks rather than the individual clicks: confirm what is selected, apply the step, and look at the result before moving on. That small routine is what keeps Excel work predictable when the same task comes back in a slightly different workbook.
Common mistakes
- Acting on cells that quietly include a header or total row, so the result is off by one with no error to warn you.
- Forgetting that a copied formula shifts its references unless you lock them with the $ sign.
- Editing data in place with no backup, so a wrong click cannot be undone once the file is saved and closed.
- 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 excel convert time into number?
Use the boxed answer at the top of this page — it gives the exact Excel steps for “excel convert time into number”, and the tool just below lets you run it on your own cells before you touch the real sheet.
Will it still work on thousands of cells?
Yes. Build it once on a small block, confirm it against the tool above, then fill it down — Excel applies the same logic to the whole column without slowing the steps.
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.
Other ways people ask this
On the way here you may have searched this as “how to convert time into number in excel” and “how to convert time into numbers in excel” — it is all the same task, and this page is the single, complete answer to it.
Why do people search for this in so many different ways?
Because the same task has many names. “how to convert time into number in excel”, “how to convert time into numbers in excel” all point at the one operation explained on this page, which is why they all lead here.