Reading ٢٠٣٠ correctly
The leftmost symbol represents the highest place and the rightmost symbol the ones place. Keep this order when inserting ٢٠٣٠ into an Arabic sentence; do not reverse the characters to match the surrounding text direction.
There are 2 zeros in 2030. Each stays in its original position in ٢٠٣٠, including any zeros between nonzero digits.
On a year label, 2030 becomes ٢٠٣٠. This changes the written digits, not the calendar: it is not a Gregorian-to-Hijri date calculation.
Method and sources
Number Digit maps each digit as text: Western 0–9 to Arabic-Indic U+0660–U+0669 or extended Arabic-Indic U+06F0–U+06F9. This preserves digit order without rounding large integers. It does not translate number words or convert calendars. With Arabic punctuation selected, recognized decimal, grouping and percent marks are replaced too; this is not automatic detection of your country's number format.
Persian and Urdu share extended Arabic-Indic code points, but fonts and language settings can give some characters different shapes. A character's Unicode code is a more reliable identifier than its appearance alone.