Riyadh
Mumbai
Convert AST to IST
Arabia Standard Time to India Standard Time — Mumbai is 2.5 hours ahead of Riyadh
Quick Facts
Time Difference
+2.5 hours
AST Full Name
Arabia Standard Time
IST Full Name
India Standard Time
AST to IST Conversion Table
Related Conversions
About AST and IST Time Zones
AST (Arabia Standard Time) is UTC+3 and covers cities like Riyadh, Jeddah, Baghdad. IST (India Standard Time) is UTC+5:30 and covers cities like Mumbai, Delhi, Bangalore.
When it's 12:00 PM (noon) in Riyadh (AST), it's 2:30 PM in Mumbai (IST). The time difference between AST and IST is 2.5 hours — Mumbai is ahead of Riyadh.
With only a 2.5-hour difference, Riyadh and Mumbai share nearly a full business day overlap, making scheduling straightforward.
Use our world clock tool to compare Riyadh and Mumbai with a visual timeline, or browse more timezone conversions.
Frequently Asked Questions
What is the time difference between AST and IST?
Mumbai (IST) is 2.5 hours ahead of Riyadh (AST). The offset is +2.5 hours.
Is IST ahead or behind AST?
IST is 2.5 hours ahead of AST. AST is UTC+3 and IST is UTC+5:30.
When it's 12:00 PM in Riyadh, what time is it in Mumbai?
When it's 12:00 PM (noon) in Riyadh (AST), it's 2:30 PM in Mumbai (IST).
When it's 5:00 PM in Riyadh, what time is it in Mumbai?
When it's 5:00 PM in Riyadh (AST), it's 7:30 PM in Mumbai (IST).