How to convert Date format in magento 2?

This way i convert date format

protected $timezone;

public function __construct(
\Magento\Framework\Stdlib\DateTime\TimezoneInterface $timezone,
......
)
{
    $this->timezone = $timezone;
}

$dateTimeZone = $this->timezone->date(new \DateTime($yourdate))->format('Y/m/d H:i:s');

In PHP, you can convert date to any format by using a combination of date and strtotime function.

Please try below format to convert date:

date(format, strtotime(originaldate))

Suppose, you have original date as mm/dd/yy (say 21/03/10) and you want to convert it to yy/mm/dd H:i:s format (say 10/03/21 00:00:00), then try below code:

$originalDate = "21/03/10";

$newDate = date("d-m-Y H:i:s", strtotime($originalDate));