Time Zone Converter
Convert a date and time between India and major world time zones, DST included.
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What This Tool Does
This tool converts a specific date and time from one time zone to another — built primarily for India Standard Time (IST) against the time zones Indian professionals deal with most: US and UK business hours, Gulf countries, Europe and Asia-Pacific. Unlike a simple fixed-offset calculation, it uses your browser's built-in time zone data to automatically account for daylight saving time (DST) in zones that observe it, so a US Eastern Time conversion is correct whether it's EST or EDT on that particular date. See our explainer on how time zones actually work, and why India has just one for the reasoning behind IST itself.
How to Use It
- Enter the date and time you want to convert, or press Use Current Time to fill in right now.
- Choose the From and To time zones.
- Press Convert — both the original and converted date, day of week and time appear instantly, so you can see immediately if the conversion crosses into the next or previous day.
Example
Scheduling a call with a client in New York? Enter 9:00 PM IST and convert to US Eastern Time — the tool shows it lands at 11:30 AM EDT the same day (or EST, automatically, depending on the date), so you know straight away it's a reasonable US business-hours slot rather than the middle of their night.
Popular Conversions
Jump straight to a dedicated page for these common conversions — each one loads pre-set and ready to use:
Frequently Asked Questions
Does this tool account for daylight saving time automatically?
Yes — it uses your browser's built-in time zone database (the same one your phone and computer already rely on) rather than a fixed offset, so zones like US Eastern or UK time convert correctly whether daylight saving is in effect on that specific date or not. India itself has not observed daylight saving time since 1945, so IST stays at a constant UTC+5:30 year-round.
Why does the converted time sometimes show a different date?
Because time zones don't just shift the clock, they can shift the calendar day too. 9:00 PM IST, for example, is already the next calendar day in time zones far enough east, like Australia or Japan — the tool shows the full date and day of week for both zones specifically so this doesn't catch you out when scheduling.
Which time zones are covered?
IST plus the zones most relevant to Indian users working internationally: US Eastern, Central and Pacific time, UK, Central Europe, the UAE (Gulf Standard Time), Singapore, Japan, Australia Eastern time and UTC. Need a specific pair pre-set and ready to go? Try the IST to EST or EST to IST pages.
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