AST to IST Time Converter
Arabia Standard Time → India Standard Time
AST = UTC+3IST = UTC+5:30
⚠️ AST is ambiguous — on this page it means Arabia Standard Time. It also refers to:
⚠️ IST is ambiguous — on this page it means India Standard Time. It also refers to:
AST (Riyadh) ↔ IST (Mumbai)
6h of business hours overlap daily (09:00–17:00)
AST (Riyadh)
IST (Mumbai)
Working hours: 09:00–17:00 local. Green = both working. Purple = one side only.
Frequently Asked Questions
What is the difference between ast and ist?
Arabia Standard Time (ast) is UTC+3 and India Standard Time (ist) is UTC+5:30. The difference between them is 2.5 hours.
Where is ast used?
Arabia Standard Time (ast) is used in Saudi Arabia and surrounding regions. The IANA timezone identifier is Asia/Riyadh. Note: ast is ambiguous and may refer to other timezones.
Where is ist used?
India Standard Time (ist) is used in India and surrounding regions. The IANA timezone identifier is Asia/Kolkata. Note: ist is ambiguous and may refer to other timezones.
How do I convert ast to ist?
Use the interactive converter above. Drag the time slider to any ast time and the ist equivalent updates instantly. You can also type a time like "3pm" or "15:00" in the input bar.
Popular AST conversions
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