Reputation: 1517

Converting time stamps in excel to dates

I have a very large excel spread sheet that has a column of time stamps. Does anyone know convert that over to a date? Is there a function I can use? I tried format cell date but that doesn't work. My file is 91,568 KB. If there is a simpler way to this that would be great. I'm open to ideas.

Thank you in advance :)

P.S. I don't know any programming languages

Upvotes: 73

Answers (13)

Hassan Alsada

Reputation: 5

Use this simple formula. It works.

Suppose time stamp in A2:

=DATE(YEAR(A2),MONTH(A2),DAY(A2))

Upvotes: -2

Daniel Horvath

Reputation: 359

Be aware of number of digits in epoch time. Usually they are ten (1534936923) ,then use:

=(A1 / 86400) + 25569

For thirteen digits (1534936923000) of epoch time adjust the formula:

=(LEFT(A1,LEN(A1)-3) / 86400) + 25569

to avoid

###################################

Dates or times that are negative or too large display as ######

See more on https://www.epochconverter.com/

Upvotes: 6

ranjeetcao

Reputation: 1843

below formula worked form me in MS EXEL

=TEXT(CELL_VALUE/24/60/60/1000 + 25569,"YYYY-MM-DD HH:MM")

CELL_VALUE is timestamp in milliseconds

here is explanation for text function.

Upvotes: 33

ownking

Reputation: 2006

The answer of @NeplatnyUdaj is right but consider that Excel want the function name in the set language, in my case German. Then you need to use "DATUM" instead of "DATE":

=(((COLUMN_ID_HERE/60)/60)/24)+DATUM(1970,1,1)

Upvotes: 1

Donatello

Reputation: 3745

A timestamp is the elapsed time since Epoch time (01/01/1970), so basically we have to convert this time in days, and add the epoch time, to get a valid format for any Excel like spreadsheet software.

From a timestamp in milliseconds (ex: 1488380243994)

use this formula:
```
=A1/1000/86400+25569
```
with this formater:
```
yyyy-mm-dd hh:mm:ss.000
```
From a timestamp in seconds (ex: 1488380243)

use this formula:
```
=A1/86400+25569
```
with this formater:
```
yyyy-mm-dd hh:mm:ss
```

Where A1 is your column identifier. Given custom formaters allow to not loose precision in displayed data, but you can of course use any other date/time one that corresponds to your needs.

Upvotes: 46

Aparna Kamath

Reputation: 1

This worked for me:

=(col_name]/60/60/24)+(col_name-1)

Upvotes: 0

Stephan Weinhold

Reputation: 1643

This DATE-thing won't work in all Excel-versions.

=CELL_ID/(60 * 60 * 24) + "1/1/1970"

is a save bet instead.
The quotes are necessary to prevent Excel from calculating the term.

Upvotes: 5

Samir Sayyad

Reputation: 119

i got result from this in LibreOffice Calc :

=DATE(1970,1,1)+Column_id_here/60/60/24

Upvotes: 0

Evgeniy Nikulov

Reputation: 27

AD ticks to datetime format: =A1/864000000000 - 109205

Upvotes: 0

Alexey Matskoff

Reputation: 353

If your file is really big try to use following formula: =A1 / 86400 + 25569

A1 should be replaced to what your need. Should work faster than =(((COLUMN_ID_HERE/60)/60)/24)+DATE(1970,1,1) cause of less number of calculations needed.

Upvotes: 10

Karl Adler

Reputation: 16786

If you get a Error 509 in Libre office you may replace , by ; in the DATE() function

=(((COLUMN_ID_HERE/60)/60)/24)+DATE(1970;1;1)

Upvotes: 22

Lana

Reputation: 71

=(((A1/60)/60)/24)+DATE(1970,1,1)+(-5/24)

assuming A1 is the cell where your time stamp is located and dont forget to adjust to account for the time zone you are in (5 assuming you are on EST)

Upvotes: 7

NeplatnyUdaj

Reputation: 6242

Use this formula and set formatting to the desired time format:

=(((COLUMN_ID_HERE/60)/60)/24)+DATE(1970,1,1)

Source: http://www.bajb.net/2010/05/excel-timestamp-to-date/ Tested in libreoffice

Upvotes: 115

Converting time stamps in excel to dates

Answers (13)

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