How does timezone conversion work?

All times are first converted to UTC (Coordinated Universal Time), then converted from UTC to the target timezone, accounting for each timezone's offset and daylight saving time.

Does this tool account for Daylight Saving Time (DST)?

Yes. The tool uses the browser's Intl API which automatically handles DST transitions for all supported timezones.

What timezone format does this tool use?

This tool uses IANA timezone names (e.g., America/New_York, Asia/Kolkata) which are the most accurate and DST-aware timezone identifiers.

UTC (Coordinated Universal Time) is the primary time standard by which the world regulates clocks. All other timezones are defined as offsets from UTC (e.g., EST is UTC-5, IST is UTC+5:30).

Timezone Converter

Converter

Convert time between any two world timezones instantly.

Quick Presets

Date

Time

From

UTC+0

UTC+5:30

UTC

18:10

Thu, May 21, 2026

UTC+0

Asia / Kolkata

11:40 PM

Thu, May 21, 2026

UTC+5:30 · +5:30 hrs

How to use Timezone Converter

1Select the date and time you want to convert.
2Choose the "From" timezone — the timezone of your input time.
3Choose the "To" timezone — the timezone you want to convert to.
4The converted time is shown instantly. Use the Swap button to reverse the conversion.

Frequently Asked Questions

Learn More

Time Zone — Wikipedia

How time zones are defined and the history of standard time

Coordinated Universal Time — Wikipedia

What UTC is and why it is the global time standard

Daylight Saving Time — Wikipedia

How and why clocks are adjusted for daylight saving time

IANA Time Zone Database

The database that powers timezone conversions worldwide

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