Calculate time difference in Windows batch file
As answered here: How can I use a Windows batch file to measure the performance of console application?
Below batch "program" should do what you want. Please note that it outputs the data in centiseconds instead of milliseconds. The precision of the used commands is only centiseconds.
Here is an example output:
STARTTIME: 13:42:52,25
ENDTIME: 13:42:56,51
STARTTIME: 4937225 centiseconds
ENDTIME: 4937651 centiseconds
DURATION: 426 in centiseconds
00:00:04,26
Here is the batch script:
@echo off
setlocal
rem The format of %TIME% is HH:MM:SS,CS for example 23:59:59,99
set STARTTIME=%TIME%
rem here begins the command you want to measure
dir /s > nul
rem here ends the command you want to measure
set ENDTIME=%TIME%
rem output as time
echo STARTTIME: %STARTTIME%
echo ENDTIME: %ENDTIME%
rem convert STARTTIME and ENDTIME to centiseconds
set /A STARTTIME=(1%STARTTIME:~0,2%-100)*360000 + (1%STARTTIME:~3,2%-100)*6000 + (1%STARTTIME:~6,2%-100)*100 + (1%STARTTIME:~9,2%-100)
set /A ENDTIME=(1%ENDTIME:~0,2%-100)*360000 + (1%ENDTIME:~3,2%-100)*6000 + (1%ENDTIME:~6,2%-100)*100 + (1%ENDTIME:~9,2%-100)
rem calculating the duratyion is easy
set /A DURATION=%ENDTIME%-%STARTTIME%
rem we might have measured the time inbetween days
if %ENDTIME% LSS %STARTTIME% set set /A DURATION=%STARTTIME%-%ENDTIME%
rem now break the centiseconds down to hors, minutes, seconds and the remaining centiseconds
set /A DURATIONH=%DURATION% / 360000
set /A DURATIONM=(%DURATION% - %DURATIONH%*360000) / 6000
set /A DURATIONS=(%DURATION% - %DURATIONH%*360000 - %DURATIONM%*6000) / 100
set /A DURATIONHS=(%DURATION% - %DURATIONH%*360000 - %DURATIONM%*6000 - %DURATIONS%*100)
rem some formatting
if %DURATIONH% LSS 10 set DURATIONH=0%DURATIONH%
if %DURATIONM% LSS 10 set DURATIONM=0%DURATIONM%
if %DURATIONS% LSS 10 set DURATIONS=0%DURATIONS%
if %DURATIONHS% LSS 10 set DURATIONHS=0%DURATIONHS%
rem outputing
echo STARTTIME: %STARTTIME% centiseconds
echo ENDTIME: %ENDTIME% centiseconds
echo DURATION: %DURATION% in centiseconds
echo %DURATIONH%:%DURATIONM%:%DURATIONS%,%DURATIONHS%
endlocal
goto :EOF
A re-hash of Aacini's code because most likely you are going to set the start time as a variable and want to save that data for output:
@echo off
rem ****************** MAIN CODE SECTION
set STARTTIME=%TIME%
rem Your code goes here (remove the ping line)
ping -n 4 -w 1 127.0.0.1 >NUL
set ENDTIME=%TIME%
rem ****************** END MAIN CODE SECTION
rem Change formatting for the start and end times
for /F "tokens=1-4 delims=:.," %%a in ("%STARTTIME%") do (
set /A "start=(((%%a*60)+1%%b %% 100)*60+1%%c %% 100)*100+1%%d %% 100"
)
for /F "tokens=1-4 delims=:.," %%a in ("%ENDTIME%") do (
IF %ENDTIME% GTR %STARTTIME% set /A "end=(((%%a*60)+1%%b %% 100)*60+1%%c %% 100)*100+1%%d %% 100"
IF %ENDTIME% LSS %STARTTIME% set /A "end=((((%%a+24)*60)+1%%b %% 100)*60+1%%c %% 100)*100+1%%d %% 100"
)
rem Calculate the elapsed time by subtracting values
set /A elapsed=end-start
rem Format the results for output
set /A hh=elapsed/(60*60*100), rest=elapsed%%(60*60*100), mm=rest/(60*100), rest%%=60*100, ss=rest/100, cc=rest%%100
if %hh% lss 10 set hh=0%hh%
if %mm% lss 10 set mm=0%mm%
if %ss% lss 10 set ss=0%ss%
if %cc% lss 10 set cc=0%cc%
set DURATION=%hh%:%mm%:%ss%,%cc%
echo Start : %STARTTIME%
echo Finish : %ENDTIME%
echo ---------------
echo Duration : %DURATION%
Output:
Start : 11:02:45.92
Finish : 11:02:48.98
---------------
Duration : 00:00:03,06
If you do not mind using powershell within batch script:
@echo off
set start_date=%date% %time%
:: Simulate some type of processing using ping
ping 127.0.0.1
set end_date=%date% %time%
powershell -command "&{$start_date1 = [datetime]::parse('%start_date%'); $end_date1 = [datetime]::parse('%date% %time%'); echo (-join('Duration in seconds: ', ($end_date1 - $start_date1).TotalSeconds)); }"
@echo off
rem Get start time:
for /F "tokens=1-4 delims=:.," %%a in ("%time%") do (
set /A "start=(((%%a*60)+1%%b %% 100)*60+1%%c %% 100)*100+1%%d %% 100"
)
rem Any process here...
rem Get end time:
for /F "tokens=1-4 delims=:.," %%a in ("%time%") do (
set /A "end=(((%%a*60)+1%%b %% 100)*60+1%%c %% 100)*100+1%%d %% 100"
)
rem Get elapsed time:
set /A elapsed=end-start
rem Show elapsed time:
set /A hh=elapsed/(60*60*100), rest=elapsed%%(60*60*100), mm=rest/(60*100), rest%%=60*100, ss=rest/100, cc=rest%%100
if %mm% lss 10 set mm=0%mm%
if %ss% lss 10 set ss=0%ss%
if %cc% lss 10 set cc=0%cc%
echo %hh%:%mm%:%ss%,%cc%
EDIT 2017-05-09: Shorter method added
I developed a shorter method to get the same result, so I couldn't resist to post it here. The two for commands used to separate time parts and the three if commands used to insert leading zeros in the result are replaced by two long arithmetic expressions, that could even be combined into a single longer line.
The method consists in directly convert a variable with a time in "HH:MM:SS.CC" format into the formula needed to convert the time to centiseconds, accordingly to the mapping scheme given below:
HH : MM : SS . CC
(((10 HH %%100)*60+1 MM %%100)*60+1 SS %%100)*100+1 CC %%100
That is, insert (((10 at beginning, replace the colons by %%100)*60+1, replace the point by %%100)*100+1 and insert %%100 at end; finally, evaluate the resulting string as an arithmetic expression. In the time variable there are two different substrings that needs to be replaced, so the conversion must be completed in two lines. To get an elapsed time, use (endTime)-(startTime) expression and replace both time strings in the same line.
EDIT 2017/06/14: Locale independent adjustment added
EDIT 2020/06/05: Pass-over-midnight adjustment added
@echo off
setlocal EnableDelayedExpansion
set "startTime=%time: =0%"
set /P "=Any process here..."
set "endTime=%time: =0%"
rem Get elapsed time:
set "end=!endTime:%time:~8,1%=%%100)*100+1!" & set "start=!startTime:%time:~8,1%=%%100)*100+1!"
set /A "elap=((((10!end:%time:~2,1%=%%100)*60+1!%%100)-((((10!start:%time:~2,1%=%%100)*60+1!%%100), elap-=(elap>>31)*24*60*60*100"
rem Convert elapsed time to HH:MM:SS:CC format:
set /A "cc=elap%%100+100,elap/=100,ss=elap%%60+100,elap/=60,mm=elap%%60+100,hh=elap/60+100"
echo Start: %startTime%
echo End: %endTime%
echo Elapsed: %hh:~1%%time:~2,1%%mm:~1%%time:~2,1%%ss:~1%%time:~8,1%%cc:~1%
You may review a detailed explanation of this method at this answer.