Time Zone Calculator
Convert any date and time to 8 major world time zones simultaneously.
| Zone | Offset | Time | Date |
|---|
What is Time Zone Calculator?
A time zone calculator converts a date and time from one reference time zone to multiple others simultaneously. This is useful for scheduling international meetings, planning travel, coordinating remote teams, and understanding when events happen across the globe.
How to use
- 1 Enter a date and time using the datetime picker.
- 2 Select the source time zone from the dropdown.
- 3 The table below instantly shows the equivalent time in 8 major zones.
Formula
Example calculation
9:00 AM EST (UTC−5) equals 14:00 UTC, 15:00 GMT+1, 19:30 IST, and 23:00 JST on the same calendar day.
Frequently asked questions
Does this account for daylight saving time?
No. This calculator uses fixed UTC offsets for simplicity. During DST periods, US time zones shift by +1 hour — e.g., EST becomes EDT (UTC−4). Check your local DST dates for exact accuracy.
What does UTC mean?
UTC stands for Coordinated Universal Time. It is the primary time standard by which the world regulates clocks. It has no daylight saving offset.
What is IST?
IST is India Standard Time, UTC+5:30. India uses a single time zone for the entire country.