Time Zone Converter — Free Online Tool

The Time Zone Converter translates a time in one city into the local time in others, accounting for each location's current daylight saving state.

Daylight saving is what makes this genuinely error-prone rather than simple arithmetic. The offset between two cities is not fixed — it changes several times a year, and the transition dates differ by country. The United States and Europe switch on different weekends, so for a couple of weeks each spring and autumn the gap between New York and London is four hours rather than the usual five. Most of Asia, including Pakistan and India, does not observe daylight saving at all, and the southern hemisphere runs the opposite way. Any meeting scheduled by remembering a fixed offset will eventually land an hour wrong.

The half-hour and quarter-hour zones catch people too: India and Sri Lanka run at 30-minute offsets, Nepal at 45 minutes, and parts of Australia at 30. Assuming whole-hour offsets produces meetings that start at :30 past for one participant.

For anyone scheduling across regions regularly, the reliable habit is to name the time zone explicitly when proposing a time, and to confirm against a converter around the switchover weeks rather than trusting the offset you remember.

Conversion uses your browser's own time zone database, so it reflects the current rules.

Our Time Zone Converter is completely free to use with no signup required. For this tool, processing runs in your browser — your files and data stay on your device and are not uploaded to our servers.

Whether you are a developer, designer, student, or business owner, this tool is designed to save you time and make your workflow more efficient. Bookmark this page to access it whenever you need it — it will always be free.