Timezone Converter

Convert a time between two IANA time zones using Intl.DateTimeFormat (no deps)

Convert a time between two IANA time zones using Intl.DateTimeFormat.

Time (HH:MM)

From timezone

To timezone

Converted time

21:00

Date may differ due to UTC offset crossing midnight.

How to use

Enter the time you want to convert in HH:MM format.
Select the source timezone from the "From" dropdown — searchable by city or IANA name.
Select the target timezone from the "To" dropdown.
Read the converted time displayed instantly below — note that the date may differ if the offset crosses midnight.

Examples

Entering 09:00 from UTC and selecting Asia/Seoul shows 18:00 (UTC+9).
Converting 23:00 from America/New_York to Europe/London may show the next calendar day due to the overnight crossing.

Verify outputs before using in production. No warranty — see Terms.