Time Zone Converter
Enter a date and time in one city and see it in up to four others — for example what 3 PM in New York is in London, Tokyo or Sydney. Each result shows the local time, the date, whether the day changes, and the UTC offset in force on that date. Free, no sign-up.
Source time
Convert to
Conversions use your browser's built-in IANA time zone database (via the Intl API), so results depend on how up to date your browser or operating system is. Nothing is sent to a server.
How to Use the Time Zone Converter
- 1. Set the source time. The date and time open on your current local time. Change them to the moment you want to convert, then choose the zone that time is in — New York is the default.
- 2. Choose target zones. London and Tokyo are preselected. Use each drop-down to change a zone, + Add time zone to show up to four, and Remove to drop one.
- 3. Read each card. It gives the local time, the weekday and date, a same day, +1 day or −1 day marker, and the offset from UTC, such as GMT+1.
- 4. Try another date. Offsets change with daylight saving, so a conversion for July can differ from the same clock time in January.
How Time Zone Conversion Works
Every conversion goes through UTC. The tool turns the wall-clock time in the source zone into one exact instant, using the offset that applies on that date, and then shows the same instant as a wall-clock time in each target. Offsets are not fixed: most of the United States and Canada and most of Europe change their clocks, while India, Japan, Singapore, Arizona and Hawaii do not.
| Region | Daylight saving in 2026 |
|---|---|
| United States and Canada (most) | Starts Sunday 8 March, ends Sunday 1 November |
| European Union and United Kingdom | Starts Sunday 29 March, ends Sunday 25 October |
| Sydney and southeast Australia | Ended Sunday 5 April, restarts Sunday 4 October |
| Arizona, Hawaii, India, Japan, Singapore | Do not change |
Because the dates differ, the gap between two cities changes for a few weeks a year. New York is normally five hours behind London, but at 3:00 PM on 15 March 2026 — after the US has moved its clocks and before the UK has — it is only four hours behind, and London reads 7:00 PM.
Worked Examples
| Source time | Converted to | Result |
|---|---|---|
| 3:00 PM, New York, 17 Oct 2026 | London | 8:00 PM, Sat 17 Oct (GMT+1) |
| 3:00 PM, New York, 17 Oct 2026 | Tokyo | 4:00 AM, Sun 18 Oct (+1 day) |
| 3:00 PM, New York, 17 Oct 2026 | Sydney | 6:00 AM, Sun 18 Oct (+1 day) |
| 3:00 PM, New York, 17 Oct 2026 | Mumbai / Delhi | 12:30 AM, Sun 18 Oct (+1 day) |
| 9:00 AM, Sydney, 17 Oct 2026 | London | 11:00 PM, Fri 16 Oct (−1 day) |
| 9:00 AM, Sydney, 17 Oct 2026 | Los Angeles | 3:00 PM, Fri 16 Oct (−1 day) |
| 3:00 PM, New York, 15 Mar 2026 | London | 7:00 PM, Sun 15 Mar (GMT) |
| 3:00 PM, New York, 15 Mar 2026 | Paris | 8:00 PM, Sun 15 Mar (GMT+1) |
Scheduling across zones
Write meeting times with the date, the clock time and a UTC offset or city, such as 15:00 New York (UTC−4). Three-letter abbreviations are ambiguous: IST can mean India, Ireland or Israel, and CST can mean US Central, China or Cuba. The converter uses city names for this reason.
Limits to Know About
- Forty cities plus UTC. The lists hold major cities, not every time zone. For a smaller place, pick a listed city that shares its offset and daylight-saving dates, and check unusual cases — half-hour offsets, regions with their own rules — against an official source.
- Clock changes at 2 AM. A time that does not exist (the hour skipped in spring) is moved forward by the length of the jump, and a time that happens twice (the hour repeated in autumn) uses the first of the two readings. A notice under the form says which one happened, so check it before relying on a time inside that hour.
- Your browser supplies the rules. Zone data comes from the IANA time zone database built into your browser or operating system, so a very recent government change to a zone's rules may take a while to appear on an out-of-date device.
Which Tool Do You Need?
| You want to… | Use |
|---|---|
| Show one clock time in several cities | This converter |
| Turn a Unix timestamp or ISO date-time into a readable date | Timestamp Converter |
| Add or subtract hours and minutes | Time Calculator |
| Switch between 12-hour and 24-hour time | Military Time Converter |
| Write a time that shows in each reader's own zone on Discord | Discord Timestamp Generator |
Frequently Asked Questions
- How do I convert a time between time zones?
- Enter the date and time, choose the zone that time is in, and pick up to four target zones. Each card shows the equivalent local time, the date and the UTC offset. For a quick "EST to PST" check, choose New York as the source and Los Angeles as a target.
- Does it handle daylight saving time?
- Yes. The conversion uses the offset that applies to the exact date you enter, so the same clock time converts differently in summer and winter. Cities that never change their clocks, such as Phoenix and Tokyo, are handled the same way.
- Why can the converted time land on a different day?
- Zones are up to about 26 hours apart across the full range of offsets, so an afternoon in one place can already be tomorrow morning in another. A card shows +1 day or −1 day when the local date differs from the source date, as with 3:00 PM in New York on 17 October becoming 4:00 AM in Tokyo on the 18th.
- What is the difference between ET, EST and EDT?
- ET is Eastern Time in general. EST is the winter, or standard, offset of UTC−5 and EDT is the summer, daylight offset of UTC−4. The converter works with the city's zone rather than an abbreviation, so it picks the right one for your date.
- Why do the time differences change for a few weeks each year?
- Countries switch daylight saving on different dates. In 2026 the US moved its clocks on 8 March and the UK on 29 March, so for three weeks New York and London were four hours apart instead of five. The same happens in the autumn between 25 October and 1 November.
- Where does the time zone data come from, and is anything uploaded?
- The data comes from the IANA time zone database built into your browser, which formats the exact moment in each zone. The conversion runs on your device and nothing you enter is sent to a server.