US Time Zone Converter

How this calculation works

The contiguous US spans four time zones — Eastern, Central, Mountain, and Pacific — each one hour apart.

Daylight saving time in the US runs from the second Sunday in March to the first Sunday in November.

How this US Time Zone Converter works — 2026 guide

The contiguous US spans four time zones — Eastern, Central, Mountain, and Pacific — each one hour apart, plus Alaska and Hawaii-Aleutian for the full set of six. This US time zone converter translates any time across all six zones with automatic daylight saving handling (DST runs from the second Sunday in March to the first Sunday in November; most of Arizona stays on Mountain Standard Time year-round). Whether you're scheduling a remote meeting from New York to Los Angeles or confirming a 9 AM ET conference call for your PT team, the answer is one input away.

How to use it in 3 steps

1. Enter a time and pick the source US time zone (ET, CT, MT, PT, AKT, or HST).
2. Choose the target zone — or "all zones" to see every conversion at once.
3. Read the converted times with DST applied automatically based on the date.

Who this is for

Remote teams coordinating across coasts, travelers confirming flights, and anyone confused by "9 AM PT in my timezone." Read the [how to read US time zones guide](/blog/how-to-read-us-time-zones/) and the [US time zones for remote work guide](/blog/us-time-zones-for-remote-work/) for the scheduling playbook.

Data sources & authoritative references

This calculator is built on official U.S. rules and published statistics. Key sources:

• NIST — Time and Frequency Division (U.S. time zones)
• time.gov — Official U.S. Time