Timezone Converter
Convert any date and time between world timezones instantly.
Converted Times
America / New York
EDT · UTC-04:00
17:22
2026-04-16
Europe / London
GMT+1 · UTC+01:00
22:22
2026-04-16
Asia / Tokyo
GMT+9 · UTC+09:00
06:22
2026-04-17
About This Tool
Convert dates and times across global timezones using the browser's built-in Intl API. Select source and target timezones, enter a time, and get the converted result with UTC offset details. Runs entirely in your browser with zero external dependencies.
What you provide
A date/time and source timezone
What you get
The equivalent date/time in one or more target timezones
How to Use
- Select the source timezone from the dropdown.
- Enter the date and time you want to convert.
- Select one or more target timezones to see the converted times.
Frequently Asked Questions
- What is UTC and how does it relate to timezones?
- UTC (Coordinated Universal Time) is the primary time standard used worldwide. Timezones are defined as offsets from UTC — for example, US Eastern Time is UTC-5 in winter and UTC-4 during daylight saving time.
- Does this tool handle daylight saving time?
- Yes. The converter uses the IANA timezone database built into your browser, which includes all historical and current daylight saving time rules for each timezone.
- Is this tool free to use?
- Yes. This tool runs entirely in your browser with no account required. Your data never leaves your device.
- Can I use this for commercial projects?
- Yes. The output is yours to use for any purpose.
- Does this work on mobile?
- Yes. The tool is fully responsive and works on any device with a modern browser.
Learn More
How Timezones Work: UTC, IANA, and DST Explained
Understand UTC offsets, the IANA timezone database, daylight saving time rules, and common conversion mistakes developers make.
7 min read