How to Use Time Zone Converter
The Time Zone Converter is essential for cross-border meetings, travel planning and global collaboration.
- Pick a date and time — Use the date and time pickers.
- Select the source time zone — Where the time is local.
- Select the target time zone — Where you want the equivalent shown.
- Toggle 12/24-hour — Choose the format that matches your audience.
- Read the converted time — Plus the date-difference label and a quick comparison list (NYC, London, Shanghai, Tokyo).
Formula & Theory - Time Zone Converter
The conversion is offset-based, taking daylight saving (DST) into account:
UTC_time = local_time - source_offset
target_local = UTC_time + target_offsetBoth offsets are computed dynamically from the IANA database for the chosen date - so summer / winter shifts are applied correctly.
| Zone | Standard offset | DST offset |
|---|---|---|
| America/New_York | UTC-5 | UTC-4 |
| Europe/London | UTC+0 | UTC+1 |
| Asia/Shanghai | UTC+8 | (no DST) |
| Asia/Tokyo | UTC+9 | (no DST) |
| Australia/Sydney | UTC+10 | UTC+11 |
Date Difference
When zones span more than ~12 hours, conversions can land on a different calendar day. The Time Zone Converter highlights this with a clear “next day” or “previous day” label.
Use Cases for Time Zone Converter
The Time Zone Converter is invaluable for:
- Remote work — Schedule cross-team meetings between continents.
- Travel planning — Convert flight times, hotel check-ins, and tour schedules.
- Live streaming — Convert event start times for global audiences.
- Trading — Cross-check stock market open/close times across regions.
- Customer support — Plan support shifts to cover business hours in multiple regions.
- Family & social — Schedule calls with family or friends abroad.
The Time Zone Converter automates DST handling, so cross-time-zone planning is never a guessing game.