US Time Zones Converter
Convert a time between Eastern, Central, Mountain, Pacific, Alaska and Hawaii time.
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How to do it
- 1Fill in the boxes
Type your numbers or pick the options you need.
- 2See the result
The answer updates right away as you change a value.
- 3Use it
Copy the result or note it down. Nothing is sent anywhere.
About this tool
Choose a time and the zone it is in. The table shows the same moment in every US time zone, UTC and London for today, with daylight saving time applied where it is in force.
The US zones
The contiguous United States has four time zones: Eastern, Central, Mountain and Pacific. Alaska and Hawaii have their own. Most of the country changes clocks for daylight saving time between March and November, but Arizona (except Navajo Nation) and Hawaii do not.
Example
9:00 AM Eastern is 8:00 AM Central, 7:00 AM Mountain and 6:00 AM Pacific.
Tips
When scheduling across zones, state the zone name or use UTC. Daylight saving time changes the gap with London for a few weeks in spring and autumn when the two countries switch on different dates.
Frequently asked questions
Which states have more than one zone?
Several, including Texas, Florida, Kentucky, Tennessee, Idaho and Oregon, are split.
Does Arizona change its clocks?
No, most of Arizona stays on Mountain Standard Time all year.
What is the difference between EST and EDT?
EST is standard time, EDT is daylight time. The table shows the one in force today.
How far is London?
Usually 5 hours ahead of Eastern, but 4 hours for a few weeks when the US has switched and the UK has not.