Does this tool account for daylight saving time?

Yes — it uses your browser's built-in time zone database (via Intl.DateTimeFormat), which applies the correct DST rules for the date you enter, not just the current date.

What does the offset like GMT-5 or GMT+9 mean?

It's how many hours (and sometimes minutes) that time zone is ahead of or behind Coordinated Universal Time (UTC) at the entered date and time.

Can I convert to a time zone that isn't in the list?

The list covers major zones worldwide; for less common ones, pick a nearby city in the same zone — most zones within a country share the same offset and DST rules.

Is my entered date and time sent anywhere?

No. All conversion happens locally in your browser using its built-in time zone data — nothing is transmitted or stored.

TIME ZONE CONVERTER

Convert a date and time between zones and see the UTC offset. Nothing leaves your browser.

Date & time

From time zone

To time zone

America/New_York (GMT-4)Mon, Aug 24, 2026, 09:51 AM

Europe/London (GMT+1)Mon, Aug 24, 2026, 02:51 PM

How to use the time zone converter

1
Enter the date and time you want to convert.
2
Pick the time zone that date and time is in.
3
Pick the time zone you want to convert it to.
4
Read the converted date, time, and UTC offset for both zones.

Questions

Does this tool account for daylight saving time?: Yes — it uses your browser's built-in time zone database (via Intl.DateTimeFormat), which applies the correct DST rules for the date you enter, not just the current date.
What does the offset like GMT-5 or GMT+9 mean?: It's how many hours (and sometimes minutes) that time zone is ahead of or behind Coordinated Universal Time (UTC) at the entered date and time.
Can I convert to a time zone that isn't in the list?: The list covers major zones worldwide; for less common ones, pick a nearby city in the same zone — most zones within a country share the same offset and DST rules.
Is my entered date and time sent anywhere?: No. All conversion happens locally in your browser using its built-in time zone data — nothing is transmitted or stored.