Time Zone Converter
Convert any date and time between world time zones — instantly. Handles Daylight Saving Time automatically. Common conversions: IST ↔ EST, IST ↔ PST, GMT ↔ EST, UTC ↔ local.
How the conversion works
Each time zone is an offset from UTC (Coordinated Universal Time). We use the IANA time-zone database via the browser's `Intl.DateTimeFormat` API — it knows every zone's current and historical DST rules, so April-October offsets for places like New York (EDT = UTC-4) automatically differ from November-March (EST = UTC-5).
When you'll use this converter
- Scheduling international meetings (IST ↔ EST, IST ↔ PST)
- Live-streaming and event times across regions
- Travel itineraries
- Coordinating with overseas freelancers / clients
- Cricket and sports match times in viewers' local time
Frequently asked
What is the time difference between IST and EST?
Indian Standard Time (IST) is 9 hours 30 minutes ahead of US Eastern Standard Time (EST). During US daylight saving (EDT), it's 9 hours 30 minutes ahead.
Does this converter handle Daylight Saving Time?
Yes. We use the IANA time-zone database via the browser's Intl API, which knows the exact DST start/stop dates for every zone.
What's the difference between GMT and UTC?
Practically zero for everyday use. UTC is the modern atomic-clock-based standard; GMT is a historical zone (Greenwich Mean Time) that for most purposes is identical to UTC.