Time Zone Calculator

Convert any date and time between international time zones, handling daylight saving time (DST) offsets automatically.

How to use this calculator

1. Pick date and time.
2. Select zones.
3. View converted time.

Formula & method

IANA Time Zone Conversion

Target = Source - Offset(Source) + Offset(Target)

DST-aware conversion.

Example

12:00 PM NY = 5:00 PM London.

Key insights

• Time zones change for DST.

How to interpret your result

Difference

Offset between zones.

Frequently asked questions

Does it handle DST?

Yes.

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