Time Zone Converter
Convert a date and time between selected global time zones using the browser time-zone database.
Calculator
Results
How it works
Convert a date and time between selected global time zones using the browser time-zone database.
Example
| Example | Result |
|---|---|
| Jan 15, 2026 12:00 in New York | Jan 15, 2026 22:30 in Kolkata. |
Important notes
- Calendar calculations use Gregorian calendar rules.
- Business-day calculations exclude Saturday and Sunday unless stated otherwise.
- Time-zone calculations depend on the browser's IANA time-zone data.
- For planning purposes, verify dates and times when a contractual or legal deadline is involved.
Frequently Asked Questions
Does this handle daylight saving time?
Yes, where the browser time-zone database contains the relevant rules.
Are all time zones supported?
The dropdown intentionally provides a curated set of common IANA zones.
How to use this calculator
What to enter
Enter or select the following as requested: Date; Time; From time zone; To time zone. Follow the units, valid ranges, examples, and options displayed beside each field.
What the result means
The output is the equivalent value in the selected target unit or format. Confirm the source and target units, any required context (such as temperature scale or time zone), and the displayed rounding.
When to use it
Use this when the same quantity or value is needed in another compatible unit or representation. For practical measurements, verify the converted value and unit before using it.