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Excel/numbers change format when hitting "Enter"


I would like to fix ALL future spreadsheets (if possible), so that it will not put in or take out decimals when I am trying to input a phone number, or any other type of number.  Is there a way to fix this once and for all?  Or do I need to do it every single time?

You may have a setting which puts in the decimal point. Look at File/Options/Advanced - near the top is a checkbox for "Automatically Insert a decimal point" - uncheck that.
Also, if you format any cell to be currency, for example, then when you put in a phone# you'll see a "$". Or if you format a cell to be a phone # (xxx) xxx-xxxx, then if you enter 25, you'll see (000) 000-0025.
YOUR setting of a cell determines future settings of that cell until you override it with another format.
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Bob Umlas


I`m a Microsoft Excel MVP (Most Valuable Professional) and have been since the inception of the program in 1995. I can answer every kind of Excel question except: API, Importing/exporting to other programs (powerpoint, word,...) Also check out my in-person training link at


Worked with MS Excel since version 0.99 (on the Mac!). Was contributing editor to Excellence Magazine, having written >300 articles. John Walkenbach said of me "I finally met someone who knows as much about Excel as I do."

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BA in math, Hofstra University, 1965

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Led sessions for the Convergence 2004-2006 seminar on Excel tips & tricks

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