IST to CET Converter

India Standard Time → Central European Time · IST is 4 hours 30 minutes ahead of CET

IST
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CET
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IST and CET are the same time

IST to CET Conversion Table

ISTCET
12:00 AM12:00 AM
1:00 AM1:00 AM
2:00 AM2:00 AM
3:00 AM3:00 AM
4:00 AM4:00 AM
5:00 AM5:00 AM
6:00 AM6:00 AM
7:00 AM7:00 AM
8:00 AM8:00 AM
9:00 AM9:00 AM
10:00 AM10:00 AM
11:00 AM11:00 AM
12:00 PM12:00 PM
1:00 PM1:00 PM
2:00 PM2:00 PM
3:00 PM3:00 PM
4:00 PM4:00 PM
5:00 PM5:00 PM
6:00 PM6:00 PM
7:00 PM7:00 PM
8:00 PM8:00 PM
9:00 PM9:00 PM
10:00 PM10:00 PM
11:00 PM11:00 PM

Green rows = business hours overlap (9:00 AM – 6:00 PM IST)

Major IST Cities
  • Mumbai
  • Delhi
  • Bangalore
  • Hyderabad
  • Chennai
  • Pune
Major CET Cities
  • Frankfurt
  • Berlin
  • Paris
  • Amsterdam
  • Madrid
  • Rome
  • Vienna
  • Zurich
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IST vs CET — India to Europe

IST (UTC+5:30) — India Standard Time, fixed year-round with no DST. One national time zone for the entire country.

CET (UTC+1) — Central European Time. Shifts to CEST (UTC+2) in summer (late March–late October).

Best overlap: 1:30–5:30 PM IST = 9:00 AM–1:00 PM CET (winter). Indian afternoons are consistently the prime window for Bangalore, Mumbai, or Delhi teams coordinating with Frankfurt, Berlin, or Paris.

Frequently Asked Questions

How many hours is IST ahead of CET?

IST (UTC+5:30) is 4 hours 30 minutes ahead of CET (UTC+1). During European summer (CEST, UTC+2), IST is 3 hours 30 minutes ahead. India does not observe DST, so the gap changes only when Europe shifts clocks.

What is 9 AM IST in CET?

9:00 AM IST (India) is 4:30 AM CET (Frankfurt/Berlin). For Indian morning standups at 9 AM IST, European participants are still before 5 AM. The best IST–CET overlap is 1:30–5:30 PM IST = 9:00 AM–1:00 PM CET (winter) or 12:30–4:30 PM IST = 9:00 AM–1:00 PM CEST (summer).

What is the best time to call Europe from India?

The best window to call CET cities (Frankfurt, Berlin, Paris) from India is 1:30–5:30 PM IST in winter = 9:00 AM–1:00 PM CET. In summer (CEST): 12:30–4:30 PM IST = 9:00 AM–1:00 PM CEST. Indian afternoons align with European mornings — the ideal window for India–Europe calls.

Why is the IST to CET offset always a half-hour?

Because India uses UTC+5:30, a half-hour offset. CET is UTC+1 (a whole-hour offset). The difference between UTC+5:30 and UTC+1 is 4 hours 30 minutes — always producing a :30 result. Any IST-to-CET conversion will always end in :00 or :30 minutes, never :15 or :45.