Timezone Converter
Convert any time between two time zones instantly.
New York
United States
London
United Kingdom
London current time: 5h ahead
How It Works
- 1
Enter your time
Select a source timezone and enter the date and time you want to convert. You can type a time manually or use the date picker.
- 2
View the converted time
Choose a target timezone to see the equivalent local time instantly. DST adjustments are applied automatically based on the selected date.
- 3
Share or save
Copy the shareable URL to send the conversion to others, or bookmark it for future reference. The URL preserves the exact time, date, and timezone selections.
About Time Zone Conversion
The Timezone Converter changes a time in one IANA timezone into the matching local time somewhere else. It handles Daylight Saving Time automatically, including dates where one country has switched clocks and another has not. The tool uses the IANA Time Zone Database, the same source used by operating systems and programming languages, so it can follow historical and current UTC offsets instead of relying on a fixed offset table. That matters for calls across continents, travel days, launches, and deadlines where a one-hour DST mistake is enough to miss the slot. Results update as you change the time, date, or timezone, and the shareable URL keeps the exact selections.
Frequently Asked Questions
Does the converter handle Daylight Saving Time automatically?
Yes. The converter uses the IANA Time Zone Database, which contains DST transition rules for each timezone. Pick a date, and the offset is adjusted automatically.
Why do some timezones share the same UTC offset but have different names?
Timezones with the same current UTC offset may handle DST differently. America/New_York and America/Panama are both UTC-5 in winter, but New York shifts to UTC-4 in summer while Panama stays at UTC-5. Use the city-specific IANA zone when the date matters.
Can I convert times for past or future dates?
Yes. The IANA database includes historical timezone data as well as announced future changes. You can convert times for virtually any date, though future DST rules may change if governments announce new legislation.
What is the IANA Time Zone Database?
The IANA Time Zone Database (often called tz or zoneinfo) is a collaborative compilation of timezone information maintained by the Internet Assigned Numbers Authority. It is the standard source used by Linux, macOS, Java, JavaScript Intl APIs, and most programming languages to resolve timezone names to UTC offsets.