How to find out uptime on Windows?

Question

What is the simplest way to find out how long a computer is turned on Windows?

score 68 · Accepted Answer · edited Oct 03 '17 at 13:54

68

Run command line
Type Systeminfo
Find "System Boot Time"

Days: 10 Hours: 10 Minutes: 10 Seconds: 10

For shorter result you can use:

systeminfo | find "Boot Time"

edited Oct 03 '17 at 13:54

Community

1

answered Jul 23 '09 at 09:13

MicTech

10,496

score 15 · Answer 2 · answered Jul 23 '09 at 09:31

there is great command line tool from Microsoft uptime.exe:

http://www.microsoft.com/downloads/details.aspx?FamilyID=BC18FFDB-D6FE-400B-B892-94783AE44C91&displaylang=en

good thing with this tool is it works really fast.

Uptime [server] [/s ] [/a] [/d:mm/dd/yyyy | /p:n] [/heartbeat] [/? | /help]
server Name or IP address of remote server to process.
/s Display key system events and statistics.
/a Display application failure events (assumes /s).
/d: Only calculate for events after mm/dd/yyyy.
/p: Only calculate for events in the previous n days.
/heartbeat Turn on/off the system's heartbeat
/? Basic usage.
/help Additional usage information.

score 13 · Answer 3 · edited Mar 01 '17 at 11:56

13

Open the command prompt and type:

net stats srv | find "Statistics"

Example output:

>net stats srv | find "Statistics"
Server Statistics for \\4IFS-SANDER
Statistics since 22/07/2009 10:14:14

Source (MS KB).

Edit: Actually this will tell you the date and time when the pc was up from, not the duration.

edited Mar 01 '17 at 11:56

MisterSeajay

331

answered Jul 23 '09 at 09:10

svandragt

3,353

score 9 · Answer 4 · answered Dec 03 '15 at 04:45

On Windows 7 / Windows Server 2008 and above, this information is displayed in task manager under the "Performance tab".

This can be quicker then using the command line and works in cases where you might have WMI issues preventing you from running systeminfo.

If you need to find this remotely, you could also run

systeminfo /s SERVERNAME | find "Time:"

from the command line.

score 6 · Answer 5 · edited Mar 01 '17 at 11:03

6

Following command gives last reboot time for a remote system:

systeminfo /s server_name | find "System Boot Time"

edited Mar 01 '17 at 11:03

MisterSeajay

331

answered May 22 '13 at 05:46

Dhananjay

61

score 5 · Answer 6 · answered Sep 09 '20 at 06:45

5

Yet another way:

C:\>wmic path Win32_OperatingSystem get LastBootUpTime
LastBootUpTime
20200908203723.500000+120

answered Sep 09 '20 at 06:45

hlovdal

3,168

score 5 · Answer 7 · answered Sep 15 '20 at 17:03

5

In windows 10, this is located in Task manager > Expand More Details Chevron > Performance > CPU > At the bottom, Up time.

answered Sep 15 '20 at 17:03

wasif

9,176

score 3 · Answer 8 · answered Mar 01 '17 at 11:19

Using SYSTEMINFO with PowerShell

For those who like using PowerShell, you can use the answer(s) above and wrap systeminfo in a PowerShell function to get a DateTime result for when the server last booted:

function Get-ComputerBootTime {
  param($ComputerName = (hostname))

  $SystemInfo = & systeminfo /s $ComputerName | Select-String "System Boot Time")
  if($SystemInfo -match "[\d/]+,\s+\S+"){
    return (Get-Date $matches[0])
  }
}

And then call the function, for example:

[PS]> $BootTime = Get-ComputerUptime -ComputerName MYSERVER

To get the Uptime for the server, you compare with the current time:

[PS]> $UpTime = (Get-Date) - $BootTime

This is a TimeSpan, which includes properties such as TotalDays:

[PS]> $UpTime.TotalDays
14.1827364

Eduard Florinescu · Answer 9 · 2021-06-09T20:45:49.663

Sometimes the uptime is dificult and user is not logged out and the two prety much coincide so I use this command to display the LOGON TIME

query USER

or shorter even:

quser

which prints something like:

C:\Users\eflorinescu>query  USER
 USERNAME                 SESSIONNAME        ID  STATE   IDLE TIME  LOGON TIME
>eflorinescu              console             2  Active    2+23:44  5/7/2018 8:25 AM

also even better using PowerShell

Get-ComputerInfo | select-object oslastbootuptime

score 3 · Answer 10 · edited Dec 29 '11 at 01:46

3

If you have the Windows Server 2000 or 2003 resource kits try

srvinfo -ns [\\\server] | Findstr "Time"

Note: Srvinfo.exe will not run on a 64-bit versions of Windows, due to it being 16-bit.

edited Dec 29 '11 at 01:46

Ƭᴇcʜιᴇ007

113,841

answered Dec 28 '11 at 22:03

Don

31

score 1 · Answer 11 · answered Dec 04 '20 at 13:54

Anyone wanting the unix time (seconds since the epoch) that are using cygwin can try this:

date +%s -d "$(wmic path Win32_OperatingSystem get LastBootUpTime | grep -E '^[0-9]' | awk '{print substr($1,1,4) "-" substr($1,5,2) "-" substr($1,7,2) " " substr($1,9,2) ":" substr($1,11,2) ":" substr($1,13,2);}')"

phuclv · Answer 12 · 2021-06-10T16:27:10.377

In PowerShell either of the following commands will work

Get-WmiObject win32_operatingsystem |% {$_.ConverttoDateTime($_.lastbootuptime)}
(Get-CimInstance -ClassName win32_operatingsystem).lastbootuptime

Get-CimInstance is both shorter and more future proof, because Get-WmiObject and wmic have been both deprecated

You can also run (Get-WmiObject win32_operatingsystem).lastbootuptime but the output is less readable because it's a raw time string

See PowerTip: Get the Last Boot Time with PowerShell

score 0 · Answer 13 · answered Jan 23 '25 at 08:29

In PowerShell:

$LastBoot = (Get-CimInstance -ClassName Win32_OperatingSystem).LastBootUpTime
$Uptime = (Get-Date) - $LastBoot
Write-Output "System Uptime: $Uptime"

Example output:

System Uptime: 6.08:45:53.8690764

Tested with PowerShell 5.1.26100.2161 on Windows 11 24H2 Pro.

How to find out uptime on Windows?

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