Time & Date
Time Zone Converter
Convert times across North American time zones instantly.
Schedule meetings, calls, and deadlines across time zones without confusion. Quickly convert between EST, CST, MST, and PST, including notes on daylight saving time differences.
Converted Time
11:00
- formatted12h
- 11:00 AM
- difference
- 3 hours ahead
- utc Both
- UTC-5 → UTC-8
Formula and method
Converted Time = Source Time + (Target UTC Offset - Source UTC Offset)
UTC offset subtraction with 24-hour wrap-around. Each time zone is expressed as an offset from UTC. Positive difference = destination is behind; negative = destination is ahead.
Worked examples
Schedule a call: 2pm EST to PST
- Hour (24h format):
- 14
- Minute:
- 0
- From Time Zone:
- Eastern (UTC-5 / UTC-4 DST)
- To Time Zone:
- Pacific (UTC-8 / UTC-7 DST)
Converted Time: 11:00
Webinar 7pm CST to EST
- Hour (24h format):
- 19
- Minute:
- 0
- From Time Zone:
- Central (UTC-6 / UTC-5 DST)
- To Time Zone:
- Eastern (UTC-5 / UTC-4 DST)
Converted Time: 20:00
Assumptions and limits
- Standard UTC offsets (not DST-adjusted automatically)
- North American time zones
This tool provides an educational estimate. Rules, rates and personal circumstances can change the answer. Review the assumptions before relying on a result. Report a correction.
Common mistakes to avoid
- Forgetting Daylight Saving Time — UTC offsets change by 1 hour twice per year in North America.
- Confusing EST (-5) and EDT (-4) — during daylight saving, Eastern time is UTC-4, not UTC-5.
- Scheduling across international date line — UTC-12 and UTC+12 can be an entire day apart.
Frequently asked questions
When does Daylight Saving Time start and end in North America?
DST starts the second Sunday in March (clocks spring forward 1 hour) and ends the first Sunday in November (fall back 1 hour). Arizona and Hawaii do not observe DST.
What are the business hours overlap between EST and PST?
Pacific business hours are 9am-5pm PST = 12pm-8pm EST. The overlap with Eastern business hours (9am-5pm EST) is 12pm-5pm EST = 9am-2pm PST — only 5 hours of mutual business hours.