Time Zone Converter

Convert a date and time between Indian Standard Time and major world time zones, with daylight saving time handled automatically.

What is the Time Zone Converter?

Time zones are regional offsets from UTC. India uses IST (UTC+5:30) all year, while the US, UK, Europe and Australia shift their clocks for daylight saving.

How does it work?

Your wall-clock time is converted to an exact instant using the source zone’s rules for that date, then formatted in the target zone using your browser’s time-zone database.

Formula

Target time = Source time − Source offset + Target offset

Example

10:00 AM IST on 27 September 2026 is 12:30 AM in New York (EDT, UTC−4) and 5:30 AM in London (BST).

Frequently asked questions

Why does the difference between IST and New York change?

New York moves between EST (UTC−5) and EDT (UTC−4), so the gap with IST is 10:30 in winter and 9:30 in summer.

Does India have daylight saving time?

No, IST is UTC+5:30 throughout the year.

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