Time Zone Converter
Convert a time from one UTC offset to another to coordinate across global time zones.
Time Zone Converter
Convert a time from one UTC offset to another to coordinate across global time zones.
Enter the time in 24-hour HH:MM format.
UTC offset of the source time zone, e.g. -5 for New York EST.
UTC offset of the target time zone, e.g. 9 for Tokyo JST.
Real-World Examples
09:00, from -5, to 9
23:00 (same day)
14:00, from 0, to -8
06:00 (same day)
08:00, from 10, to 0
22:00 (previous day)
Common Mistakes to Avoid
Confusing the direction of the offset difference
Fix: The formula adds (To − From). Going from UTC-5 to UTC+9 means adding 14 hours, not subtracting. Double-check which zone is source and which is target.
Ignoring daylight saving time
Fix: UTC offsets can change seasonally. For example, New York is UTC-5 in winter (EST) but UTC-4 in summer (EDT). Use the offset that applies on your target date.