Kolkata, India Perth, Australia
Compare time between Kolkata and Perth
Date
Time format
Kolkata, India
6:01
PM
Saturday, October 17, 2026
Perth, Australia
8:31
PM
Saturday, October 17, 2026
Time Difference Timeline
See the time difference throughout the day
Day time
Night time
Time difference
2h 30m
Best time to meet
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Quick facts
Kolkata time zone: IST (UTC+5:30)
Perth time zone: AWST (UTC+8)
Distance: Kolkata → Perth
Frequently Asked Questions
Kolkata is in the IST timezone (UTC+5:30) and Perth is in the AWST timezone (UTC+8). The time difference between them is 2h 30m.
Use the timeline above to find overlapping business hours between Kolkata and Perth. The "Best time to meet" card highlights the window where both cities are within working hours (9 AM – 6 PM local time).
Neither Kolkata nor Perth observes Daylight Saving Time, so the time difference remains constant throughout the year.
Click the pencil icon next to the Kolkata clock and type any time. The Perth clock will update instantly, showing the exact corresponding time. You can also pick a date to account for DST changes.