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Time Zone Converter: Convert Time Between Cities

This free time zone converter changes a date and time from one city to another, with daylight saving time handled correctly. It also shows the same moment in a dozen other major time zones.

By Debmedia Technologies LLP · Kolkata, India · Updated

What Is It and When Do You Need It?

A time zone converter tells you what time it is somewhere else at a given moment. It is essential for meetings, calls, live events and travel across countries. Daylight saving, which starts and ends on different dates in different regions, makes mental maths unreliable.

Choose a date and time, the zone you start in and the zone you want, and read the answer and a table of other zones.

How to Use This Tool

  1. Pick the date and time in the starting city.
  2. Choose the starting zone in From.
  3. Choose the target zone in To.
  4. Press Convert and read the result and the world table.

How the Calculation Works

The wall-clock time is first turned into an exact moment in UTC by finding the offset of the starting zone on that date, including daylight saving. The moment is then displayed in every other zone using the same rules. All zone rules come from the IANA time zone database built into your browser.

Worked Example

9:00 on 2 November 2026 in New York (UTC−5, because US clocks went back on 1 November) is 14:00 in London, 19:30 in Kolkata and 23:00 in Tokyo. A week earlier, New York was UTC−4, so the same 9:00 was 13:00 in London. That is why the date matters.

Common Uses

  • Scheduling meetings across countries.
  • Joining live streams and events.
  • Calling family abroad.
  • Planning travel and flights.

Tips and Common Mistakes

  • Always choose the date, because offsets change with daylight saving.
  • India has no daylight saving time.
  • Some zones have a 30 or 45 minute offset.

Next, you may need the time duration calculator, military time converter, date difference calculator, sleep calculator.

Everything runs in your browser. Nothing you type is uploaded, stored or sent to any outside service.

Frequently Asked Questions

Yes. The tool uses your browser’s built-in time zone database, so daylight saving changes for the chosen date are applied.
When the time zones are far apart, the same moment can fall on a different calendar day, for example evening in New York is the next morning in Tokyo.
Coordinated Universal Time is the world reference for time. Every time zone is described as an offset from it, such as UTC+05:30 for India.
Only if you leave the date or time empty, in which case the tool uses the current moment.

Disclaimer: results are calculated in your browser from the numbers you enter. Check important results before you rely on them for money, health, safety or legal decisions.