Time zone converter
Pick a date, a time and two places. The conversion uses each zone’s rules for that exact date, daylight saving time included.
Convert a time
11:27 PM in UTC
6:27 PM on Wednesday, November 11, 2026 in New York (Eastern Time) is 11:27 PM on Wednesday, November 11, 2026 in UTC.
- From offset
- UTC−5
- To offset
- UTC±0
- Difference
- UTC is 5 h ahead
How the conversion works
Every conversion goes through UTC. The converter finds the instant your local time names in the first zone, using that zone’s offset on that date, then shows the same instant in the second zone. Offsets come from the IANA Time Zone Database in your browser, which records each zone’s history and announced future changes (IANA), so a conversion for a date last year or next summer uses the rules in force then.
Zones are named by the database’s region and city, such as America/Chicago or Asia/Kolkata. Start typing a city, a country’s main city or a zone name, and pick from the list. One city stands for everywhere that keeps the same clock: America/Denver also covers the rest of US Mountain Time that observes daylight saving time, while America/Phoenix covers Arizona, which does not.
Clock-change days: skipped and repeated times
When clocks go forward, local times in the skipped hour do not exist. On a US spring-forward Sunday, any time from 2:00 to 2:59 AM is missing from the local clock; on the autumn fall-back Sunday, every minute from 1:00 to 1:59 AM is lived twice, once in daylight time and once in standard time (NIST, 15 U.S.C. 260a).
- Skipped time: the converter warns you and moves the time forward by the length of the jump, so 2:30 AM becomes 3:30 AM daylight time.
- Repeated time: the converter warns you and shows both instants, the first in daylight time and the second in standard time, an hour later in the US and Europe (30 minutes on Lord Howe Island).
- Different change dates: Europe, North America and the southern hemisphere change on different days, so for a few weeks a year the gap between two cities is an hour shorter or longer than usual.
Your own zone’s next change is on the time page. To schedule something a number of days away, find the date first with days from today, then convert the time for that date here.
Questions about converting time zones
Why does the time difference between two cities change during the year?
Because the cities change their clocks on different dates, or one of them does not change at all. New York and London are five hours apart for most of the year, but four hours apart for a few weeks in March and around the end of October, when only one of them has switched. Enter the actual date of your meeting to get the right answer.
What happens to a time that does not exist?
On the day clocks spring forward, an hour of local time is skipped: in New York, 2:30 AM on the second Sunday in March never happens. The converter tells you and reads it with the offset in force before the jump, which gives 3:30 AM daylight time; the iCalendar standard used by calendar invitations interprets a non-existent time the same way (RFC 5545).
What happens to a time that happens twice?
On the day clocks fall back, an hour repeats: in New York, 1:30 AM on the first Sunday in November happens once in daylight time and again an hour later in standard time. The converter shows both conversions so you can pick the one you mean.
Should I write meeting times in UTC?
For international teams and logs, giving the time in UTC, or with the offset as in 14:00Z or 09:00−05:00, removes all doubt. Calendar invitations already store the zone with the event and convert for each guest.
More date and time tools
- Today’s date The date and day where you are, in every format
- What time is it Exact time, UTC offset and daylight saving time
- Days from today Count days, weeks or months forward or back
- Days between dates Days, weeks, months and business days
- Day of the week The weekday of any date, and how to work it out
- Week number ISO 8601 and US week numbers for any year
- Calendar Printable year calendar with week numbers
- Julian date Day of the year, YYDDD codes and Julian Day
- Leap year The leap year rule, next leap year, leap seconds
- Date formats How to write the date, by country and use