Timezone Converter
Select source and target timezones, enter a date and time to see the conversion result instantly. Supports 15 commonly used timezones worldwide.
How to Use
- Select your current timezone or the timezone of the known time from the "Source Timezone" dropdown.
- Enter the date and time (24-hour format).
- Select the target timezone from the "Target Timezone" dropdown.
- The conversion result is displayed instantly below, including the full date, time, and day of the week.
- Click "Swap Timezones" to quickly reverse the source and target.
- Click "Current Time" to reset the input to the current date and time.
Common Timezone Reference
The table below lists UTC offsets (standard time) for common cities. Some timezones observe Daylight Saving Time (DST), adding 1 hour during summer.
| City | Timezone Name | UTC Offset | DST |
|---|---|---|---|
| Taipei (UTC+8) | Asia/Taipei | +8:00 | No |
| Tokyo (UTC+9) | Asia/Tokyo | +9:00 | No |
| Sydney (UTC+11) | Australia/Sydney | +10:00 | Yes (+11:00) |
| New York (UTC-5) | America/New_York | -5:00 | Yes (-4:00) |
| Los Angeles (UTC-8) | America/Los_Angeles | -8:00 | Yes (-7:00) |
| London (UTC+0) | Europe/London | +0:00 | Yes (+1:00) |
| Paris (UTC+1) | Europe/Paris | +1:00 | Yes (+2:00) |
| Dubai (UTC+4) | Asia/Dubai | +4:00 | No |
| Mumbai (UTC+5:30) | Asia/Kolkata | +5:30 | No |
Notes
- Daylight Saving Time (DST):Some timezones (e.g., New York, London, Sydney) advance 1 hour during summer. This tool uses the Intl API to handle DST automatically — no manual adjustment needed.
- Half-hour timezones:Countries like India (UTC+5:30) and Nepal (UTC+5:45) use non-integer hour offsets. Please verify conversion results.
- International Date Line:Conversions crossing the date line may result in a date change of one day. Please pay attention to the date portion.
- Historical dates:Some countries have changed their timezone rules over time. This tool uses current timezone rules.
- This tool is for reference only. For important meetings or flight times, please verify with official sources.
Frequently Asked Questions
What is UTC? How is it different from GMT?
UTC (Coordinated Universal Time) is the current global time standard based on atomic clocks. GMT (Greenwich Mean Time) is based on Earth's rotation. In everyday use they are nearly identical, but scientifically UTC is more precise. Timezones worldwide are typically expressed as "UTC±X" offsets.
What is Daylight Saving Time (DST)? Which countries observe it?
Daylight Saving Time means advancing clocks by 1 hour during summer to make better use of daylight. Regions that observe DST include the US, Canada, most European countries, and parts of Australia. Asian countries (e.g., Taiwan, Japan, South Korea, China) do not currently observe DST. Start and end dates vary by country.
What is the time difference between Taiwan and the US?
Taiwan (UTC+8) and the US East Coast (New York, UTC-5) have a standard time difference of 13 hours; during DST (March to November) it reduces to 12 hours. The difference with the West Coast (Los Angeles, UTC-8) is 16 hours standard, 15 during DST. Quick rule: Taiwan daytime = US East Coast previous evening.
Why do some timezones use half-hour or 45-minute offsets?
While most timezones use whole-hour offsets, some countries use non-integer offsets due to geographic or historical reasons. Examples include India (UTC+5:30), Iran (UTC+3:30), Nepal (UTC+5:45), and Central Australia (UTC+9:30). These timezones are fully legitimate and internationally recognized.
How should I schedule online meetings across timezones?
First identify all participants' timezones, then find overlapping slots within reasonable working hours (9 AM to 6 PM). For example, between Taiwan (UTC+8) and Europe (UTC+1), you could choose Taiwan 4-5 PM / Europe 9-10 AM. Use this tool to quickly verify the corresponding times in each timezone.