UTC time zone converter
UTC time zone converter: use utc date, utc time, destination timezone. Review the formula, worked example and calculation steps.
Inputs
Use the units shown—
Enter your values and select Calculate.
Formula & explanation
Format a UTC instant in the selected IANA time zone
Variables & units
- UTC date
- Gregorian date
- UTC time
- 24-hour time
- Destination timezone
- Select an option
Worked example
2026-11-02 12:00 UTC is 17:30 in Asia/Kolkata.
Assumptions
Conversion starts in UTC, avoiding ambiguous local daylight-saving times. Accuracy depends on the runtime timezone database; local wall-clock-to-UTC conversion is not provided.
Formula version 1.0.0. JavaScript floating-point arithmetic applies. Results display up to 6 decimal places; stored values retain available precision. Use the units shown.
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