About the Time Zone Converter
Compare a time across as many zones as you need, with daylight saving handled correctly.
What it is
A free time zone converter for comparing a single date and time across multiple zones at once. Pick a source date, time, and zone, add as many target zones as you like, and see every converted time side by side โ with correct daylight saving handling and a clear indicator whenever a conversion crosses midnight.
Features
Multi-zone comparison
Add as many target zones as you need; all update together.
DST-correct
Offsets are calculated for your chosen date via the Intl API โ never a fixed offset.
Day-shift badges
A +1d or -1d badge flags when a conversion lands on a different calendar day.
Quick picks
One-tap buttons for the most commonly used zones.
Swap
Flip the source zone with a target zone in one click.
Copy
Copy any converted time to your clipboard.
Why fixed offsets fail
Many time zone tools use a fixed UTC offset per zone, which quietly breaks for half the year in any zone that observes daylight saving time. This converter instead reads your browser's built-in IANA time zone database through the Intl API for the exact date you choose, so the offset โ and the resulting converted time โ is always correct for that specific date, on both sides of a DST transition.