Does it handle daylight saving time?

Yes. It applies each zone's daylight-saving rules for the date you enter, so the offset is correct for the season. In summer New York is UTC-4 and London UTC+1 (a 5-hour gap); in winter they're UTC-5 and UTC+0 (still 5 hours, but both an hour earlier than their summer clocks).

Coordinated Universal Time is the global time standard that doesn't observe daylight saving. Every time zone is defined as an offset from UTC — for instance UTC+9 for Tokyo or UTC-5 for New York in winter. It's the neutral reference this converter uses internally.

What time zones does this support?

Major world zones including New York, Chicago, Denver, Los Angeles, São Paulo, London, Paris/Berlin, Athens, Dubai, India, Singapore, Beijing, Tokyo, Sydney and Auckland, plus UTC. Each uses its official IANA time-zone rules, so daylight-saving transitions are handled automatically.

Time Zone Converter — convert a time between time zones

City	Local time	vs New York
London	17:00	+5 h
Dubai	20:00	+8 h
Tokyo	01:00 (+1 day)	+13 h
Los Angeles	09:00	−3 h

A time zone converter takes a wall-clock time in one place and tells you the matching clock time somewhere else. It works by finding the shared UTC instant and re-expressing it in the target zone, applying each zone's daylight-saving rules for that date. So noon in New York in June is 5 PM in London and 1 AM the next day in Tokyo. The tool shows the converted time, date, weekday and the hour gap.

Reviewed: June 20, 2026 · Author: Naveen P N, Founder — AI Calculator · Verified against: IANA time-zone rules via the browser's Intl engine, recomputed in code.

How conversion works

Step 1

read the time as the source zone's local clock

Step 2

find the matching UTC instant (apply source DST)

Step 3

show that instant in the target zone (apply target DST)

Every zone is an offset from UTC, and many shift by an hour for daylight saving part of the year. Converting correctly means anchoring to the absolute instant — the UTC time — then reading it off the destination clock. Because both zones can be on summer or winter time independently, the gap between two cities can change across the year, and a big enough offset can move the result onto the next or previous day.

Worked example — noon in New York

Scenario: 12:00 on 27 June 2026 in New York (summer, UTC-4).

To UTC

12:00 − (−4) = 16:00 UTC

To London (UTC+1)

16:00 + 1 = 17:00, same day

To Tokyo (UTC+9)

16:00 + 9 = 01:00, next day

Noon in New York is 17:00 in London (a 5-hour gap) and 01:00 the next day in Tokyo (13 hours ahead, rolling past midnight). Reverse it and 09:00 in London becomes 04:00 in New York. In January those same cities sit an hour earlier on their own clocks, but the New York–London gap stays 5 hours because both observe daylight saving on similar schedules.

Related date & time calculators

Unix Timestamp Converter — epoch time to UTC date.
Add / Subtract Time Calculator — shift a date & time.
Time Duration Calculator — time between two times.
Day of the Week Calculator — weekday of any date.
All Date & Time Calculators — the full collection.

Frequently Asked Questions

How do I convert a time between time zones?⌄

Anchor to the UTC instant, then read it in the target zone. 12:00 New York (Jun) → 17:00 London. Pick the date, from and to zones.

Does it handle daylight saving?⌄

Yes — each zone's DST rules apply for the chosen date. Summer New York is UTC-4; winter UTC-5.

Why does the converted date sometimes change?⌄

Large offsets push past midnight. 12:00 New York → Tokyo is 01:00 the next day. The result date is shown too.

What is UTC?⌄

Coordinated Universal Time — the global standard, no DST. Zones are offsets from it (Tokyo UTC+9). It's the neutral reference.

What time zones are supported?⌄

Major world zones (New York, London, Dubai, India, Tokyo, Sydney, Auckland and more) plus UTC, each with official IANA rules.

Time Zone Converter

Time zones — Quick answer