Time zone converter

IST to WIB

Western Indonesia Time (WIB) is 1 hour 30 minutes ahead of India Standard Time (IST) all year: 9:00 AM IST is 10:30 AM WIB.

India Standard Time
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Current time in India Standard Time
Western Indonesia Time
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Current time in Western Indonesia Time
Pick a date and time to convert.

WIB vs IST over the next 12 months

PeriodWIB isExample
Oct 23, 2026 onwards1 hour 30 minutes ahead9:00 AM IST = 10:30 AM WIB

IST to WIB conversion table

Every hour of a weekday around Oct 23, 2026, in both zones.

India Standard TimeWestern Indonesia Time
12:00 AM1:30 AM
1:00 AM2:30 AM
2:00 AM3:30 AM
3:00 AM4:30 AM
4:00 AM5:30 AM
5:00 AM6:30 AM
6:00 AM7:30 AM
7:00 AM8:30 AM
8:00 AM9:30 AM
9:00 AM10:30 AM
10:00 AM11:30 AM
11:00 AM12:30 PM
12:00 PM1:30 PM
1:00 PM2:30 PM
2:00 PM3:30 PM
3:00 PM4:30 PM
4:00 PM5:30 PM
5:00 PM6:30 PM
6:00 PM7:30 PM
7:00 PM8:30 PM
8:00 PM9:30 PM
9:00 PM10:30 PM
10:00 PM11:30 PM
11:00 PM12:30 AM (next day)

Best time for a meeting

Normal 9-to-5 working hours overlap for 6 hours 30 minutes on a weekday: 9:00 AM–3:30 PM IST, which is 10:30 AM–5:00 PM WIB.

Comparing more than two places? The meeting planner lines up working hours for up to six cities.

Daylight saving time

Neither IST nor WIB changes its clocks, so the difference is the same all year.

Where these clocks are used

  • India Standard Time (IST): all of India: Mumbai, Delhi, Bengaluru, Chennai. IANA zone Asia/Kolkata.
  • Western Indonesia Time (WIB): Jakarta, Bandung, Surabaya. IANA zone Asia/Jakarta.

Questions

What time is it in WIB when it is 9 AM IST?

On Oct 23, 2026, 9:00 AM IST is 10:30 AM WIB.

How many hours ahead of IST is WIB?

WIB is always 1 hour 30 minutes ahead of IST.

Do IST and WIB observe daylight saving time?

India Standard Time stays on UTC+5:30 all year. Western Indonesia Time stays on UTC+7 all year.

What is the best time for a meeting between IST and WIB?

Normal 9-to-5 working hours overlap for 6 hours 30 minutes on a weekday: 9:00 AM–3:30 PM IST, which is 10:30 AM–5:00 PM WIB.

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Related conversions

Computed from the IANA time zone database on Oct 23, 2026. Live clocks and the converter use your browser's copy of the same data.