@echo off
setlocal enabledelayedexpansion&cls
::==============================================================
call:Getsize "104864059392"
echo %Getsize%
::==============================================================
:end
ENDLOCAL&echo 按任意键退出&pause>nul
::=======================MODE CODE==============================
:Getsize
::批处理能处理的最大数为[2,147,483,647]即4Byte31Bit,第32位表示正负符号
::1MB=1024KB=1,048,576 Byte
::1GB=1048576*1024=1,073,741,824 Byte 1073741824*2=2147483648
::Integer 整数;Decimal 小数
set "Size_Num=%~1"
set "dd="
set /a dd=%Size_Num% "-" 2147483647
if %errorlevel%==9168 (
set /a GetSize=!Size_Num:~-9! "/" 1024 "/" 1024 "*" 100 "/" 1024
set /a GetSize=!Size_Num:~0,-9!000000 "/" 1024 "*" 1000 "/" 1024 "*" 100 "/" 1024 "+" !GetSize!
set "GetSize=!GetSize:~0,-2!.!GetSize:~-2! GB"
goto:eof
)
if not "%dd%"=="" (
echo %dd%
   if %dd% GTR 0 (
   set /a GetSize=%dd% "/" 1024 "/" 1024 "*" 100 "/" 1024
   set /a GetSize=200 "+" !GetSize!
   set "GetSize=!GetSize:~0,-2!.!GetSize:~-2! GB"
   goto:eof)
   if %Size_Num% GEQ 1073741824 (
   set /a GetSize=%Size_Num% "/" 1024 "/" 1024 "*" 100 "/" 1024
   set "GetSize=!GetSize:~0,-2!.!GetSize:~-2! GB"
   ) else (
   set /a GetSize=%Size_Num% "/" 1024 "*" 100 "/" 1024
   set "GetSize=!GetSize:~0,-2!.!GetSize:~-2! MB"
   )
)
goto:eof
::=======================END CODE===============================
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