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 lets you convert any time from one timezone to another with full accuracy, including automatic Daylight Saving Time (DST) adjustments. Whether you are scheduling a call with a colleague overseas, planning travel across multiple time zones, or coordinating a product launch across regions, knowing the exact local time at your destination is essential. Our converter draws on the IANA Time Zone Database (also known as the Olson database), the authoritative source used by operating systems and programming languages worldwide. This database tracks historical and current UTC offsets for every region, including the nuanced rules governing DST transitions — which vary by country and sometimes by state or province. Unlike simple UTC-offset calculators, our tool accounts for the fact that DST start and end dates differ between the Northern and Southern Hemispheres, and that some regions (such as Arizona, Iceland, and most of equatorial Africa) do not observe DST at all. The converter supports over 400 IANA zones, grouped by continent and major city for easy selection. Results update instantly as you change the source time, date, or timezone, and you can share your converted time via a permanent URL that preserves all parameters.
Frequently Asked Questions
Does the converter handle Daylight Saving Time automatically?
Yes. The converter uses the IANA Time Zone Database, which contains the full DST transition rules for every timezone. When you select a date that falls within a DST period, the offset is adjusted automatically — you do not need to account for DST manually.
Why do some timezones share the same UTC offset but have different names?
Timezones with the same current UTC offset may observe DST on different dates or not at all. For example, 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 year-round. Using the specific IANA zone ensures correct results regardless of the date.
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.