Does it handle daylight saving time?

Yes. Offsets are resolved for the exact date you enter, so a New York → London conversion correctly shows +5 hours in January and +4 hours in July.

Why did my meeting time shift after a DST change?

Because the offset between two zones is date-dependent. Always reconfirm converted times against the event date rather than reusing an old conversion.

What timezone should I put in calendar invites?

Include the UTC equivalent (shown above) alongside the local time. UTC never observes DST, so it is unambiguous for every attendee.

Timezone Converter

Translate a date and time from one world timezone to another, correctly handling daylight saving transitions.

Convert time between world timezones instantly. Free online timezone converter with DST-aware meeting planning across 13 major zones.

About Time Zones

Translate a date and time from one world timezone to another, correctly handling daylight saving transitions.

Timezone math is tricky because offsets shift with daylight saving and vary by date. This converter reads your date, time, and source zone, resolves the exact UTC offset in force on that date (including DST), and re-expresses the moment in the target zone.

The UTC equivalent line gives you the unambiguous anchor for calendar invites, and the difference line shows the signed gap between the two zones on that date. Everything is computed with your browser’s built-in timezone database — no lookups leave your device.

Where it is used

Scheduling cross-border meetings, coordinating remote teams, converting flight and broadcast times, and planning travel itineraries.

How to use the Time Zones

Date — enter the value.
Hour (0–23) — enter the value (e.g. 9).
Minute (0–59) — enter the value (e.g. 0).
From Timezone — enter the value.
To Timezone — enter the value.
Calculate — press the Calculate button to see the result instantly above.

Formula

UTC = local wall time − source offset; target wall time = UTC + target offset (DST-aware).

Examples

Example

date:2026-01-15

hour:9

minute:0

fromZone:America/New_York

toZone:Europe/London

Result: 2026-01-15 14:00 (London)

Frequently Asked Questions

Does it handle daylight saving time?: Yes. Offsets are resolved for the exact date you enter, so a New York → London conversion correctly shows +5 hours in January and +4 hours in July.
Why did my meeting time shift after a DST change?: Because the offset between two zones is date-dependent. Always reconfirm converted times against the event date rather than reusing an old conversion.
What timezone should I put in calendar invites?: Include the UTC equivalent (shown above) alongside the local time. UTC never observes DST, so it is unambiguous for every attendee.

Calculator Inputs