Productivity tools
Time Zone Converter
Convert a local date and time between common IANA time zones in your browser.
Plan across time zones with the right local clock time.
Choose the date, time, and source time zone, then compare it with another location. The browser applies each selected IANA time zone’s daylight-saving rules for that date, and the values never leave your device.
Frequently Asked Questions
Everything you need to know about this tool, how it works, and privacy.
Which time zones can I convert between?
Choose from the listed IANA time zones, including UTC and common zones across the Americas, Europe, Asia, and Australia. Select the source zone where the entered clock time occurs and the destination zone you want to compare.
How does the converter handle daylight saving time?
The converter uses your browser’s time-zone data for the selected date. That means it applies the offset in effect on that date, including daylight-saving changes where the selected zone observes them.
Does this time zone converter send my date or time anywhere?
No. The conversion runs locally in your browser using built-in internationalization features. CodeASystem does not upload or store the date, time, or time zones you enter.