timeDifficulty: 3/5

Time Zone Converter

Convert a time between any two time zones with correct daylight saving, real UTC offsets, and the date shift shown explicitly.

Date

Time

Filter the zone lists

419 zones available. Type a city or region to narrow the lists below.

From zone

To zone

Why a city and not an abbreviation: A zone name like America/New_York identifies a set of RULES, which is what a conversion needs; an abbreviation does not. “EST” is used by both the United States and Australia, and for eight months of the year New York is not on EST at all — it is on EDT, one hour different. Offsets here are looked up from your browser’s IANA database for the specific date you entered, never from a fixed table, which is why a January conversion and a July conversion give different answers for the same clock time.

How it works

Pick a date and time, and the zone it is in.
Pick the zone you want it converted to.
Offsets are looked up from your browser’s time zone database for that exact date, so daylight saving is correct.

Privacy & Processing: Everything runs in your browser. Nothing you enter is uploaded, stored, or sent to analytics.

Frequently Asked Questions

Does it handle daylight saving correctly?

Yes, and that is the whole point. Offsets are looked up from your browser’s IANA time zone database for the SPECIFIC date you enter, never from a fixed table. New York is UTC-5 in January and UTC-4 in July; Sydney is UTC+11 in January and UTC+10 in July. A converter using "EST = UTC-5" is wrong for eight months of the year.

Why choose a city instead of an abbreviation like EST?

Because abbreviations are ambiguous and often wrong. EST is used by both the United States and Australia, and for most of the year New York is not on EST at all. An IANA name like America/New_York identifies a set of RULES, which is what a conversion actually needs. The tool keeps the distinction between a time zone and a UTC offset explicit throughout.

What happens on the clock-change days?

The two awkward cases are handled and reported rather than hidden. Some local times do not exist — 02:30 on 10 March 2024 never happened in New York, because the clock jumped from 01:59 to 03:00 — and some happen twice, like 01:30 on 3 November 2024, once at UTC-4 and again at UTC-5. Most converters silently invent an answer; this one tells you which case you have hit.

Does it show the date change?

Yes. When the destination is already on the next day, or still on the previous one, that is stated alongside the time — which is the detail people actually get wrong when scheduling across zones. 5:00 PM in New York is 7:00 AM the NEXT day in Sydney.

Does it work for past and future dates?

Within the limits of your browser’s time zone data, yes — including historical rule changes. Countries do change their rules, sometimes at short notice, so a date far in the future reflects the rules as currently known.