About This Calculator
Convert time between major world time zones instantly. Use the calculator above for instant results.
Worked Examples
- EST (UTC-5): 14:00 → UTC: 19:00 (7pm)
Answer: 7pm UTC
- PST (UTC-8): 10:00 → JST (UTC+9): 3am next day
Answer: 3am JST
- EST to CET (+6 hours): 9am → 3pm CET
Answer: 3pm CET
Who Uses This Calculator?
Schedule cross-timezone meetings.
Know local time at destination.
Plan deployments and on-call schedules.
Convert class times for global courses.
Common Mistakes to Avoid
❌ Daylight Saving Time
EST vs EDT, PST vs PDT — the same zone with different offsets by season. Always double-check if DST is currently in effect.
❌ Date change crossing midnight
Converting from PST to JST often results in the next day. Check if the converted time crosses midnight.
Frequently Asked Questions
UTC vs GMT?
Essentially the same for practical purposes. UTC is the modern scientific standard; GMT is the historical standard. Both are UTC+0.
US time zones?
EST (UTC-5), CST (UTC-6), MST (UTC-7), PST (UTC-8) in winter. Add 1 hour for daylight saving (EDT, CDT, MDT, PDT) in summer.
Best tool for recurring meetings?
World Time Buddy (worldtimebuddy.com) and Calendly handle DST automatically and show multiple zones simultaneously.