Convert a date & time from one timezone into any others, DST-aware
A tool that takes a date and time in one timezone and shows what it is in as many other timezones as you need, all at once, accounting for daylight saving automatically.
Set a date, time, and source timezone — or click Now.
Pick the timezone on each target card.
Every target updates instantly with the converted time.
Click "+ Add timezone" to add another target card, and remove any card with its ✕ button. All targets recalculate together the moment the source date, time, or timezone changes, so you can line up several cities side by side instead of converting one pair at a time.
Yes. Instead of applying one fixed offset per timezone, it looks up the real offset for the exact date and time you entered — so a conversion in July and the same conversion in January can correctly come out an hour apart for timezones that observe daylight saving.
Everything runs through your browser's built-in Intl API and its timezone database, the same data your operating system uses — not a hardcoded offset table that can go stale when a country changes its daylight saving rules.
Set the meeting time in the organizer's timezone, add a target card for every attendee's timezone, and read off what time it lands at for each of them — useful for scheduling across distributed teams without doing the math by hand or guessing at DST.
418 timezones — the full IANA timezone list your browser ships with, covering specific cities and regions (like America/New_York or Asia/Kolkata), not just a short list of major zones.
The source timezone field starts pre-filled with your browser's detected local timezone, and the Now button fills in your current local date and time in one click.
Yes. Rather than applying a fixed offset, it looks up each timezone's actual offset for the specific date and time you entered, so daylight saving transitions are handled correctly instead of being off by an hour part of the year.
418, the full IANA timezone database exposed by your browser, covering every city and region timezone, not just a short list of major ones.
Yes. Add as many target timezone cards as you need and they all update together whenever you change the source date, time, or timezone.
Yes. The source timezone is pre-filled with your browser's detected local timezone, and the Now button fills in your current local date and time.
It's that timezone's offset from UTC at the specific converted date and time, such as UTC-4 or UTC+5:30 — and it can change across the year for timezones that observe daylight saving.
No. All conversion happens in your browser using its built-in timezone database (the Intl API), so there's no server round-trip or external API involved.