UTC to JST Converter
JST is 9 hours ahead of UTC
UTC to JST Conversion Table
Green rows indicate standard business hours (9 AM – 5 PM) in JST
| UTC | JST |
|---|---|
| 12:00 AM | 9:00 AM |
| 1:00 AM | 10:00 AM |
| 2:00 AM | 11:00 AM |
| 3:00 AM | 12:00 PM |
| 4:00 AM | 1:00 PM |
| 5:00 AM | 2:00 PM |
| 6:00 AM | 3:00 PM |
| 7:00 AM | 4:00 PM |
| 8:00 AM | 5:00 PM |
| 9:00 AM | 6:00 PM |
| 10:00 AM | 7:00 PM |
| 11:00 AM | 8:00 PM |
| 12:00 PM | 9:00 PM |
| 1:00 PM | 10:00 PM |
| 2:00 PM | 11:00 PM |
| 3:00 PM | 12:00 AM +1d |
| 4:00 PM | 1:00 AM +1d |
| 5:00 PM | 2:00 AM +1d |
| 6:00 PM | 3:00 AM +1d |
| 7:00 PM | 4:00 AM +1d |
| 8:00 PM | 5:00 AM +1d |
| 9:00 PM | 6:00 AM +1d |
| 10:00 PM | 7:00 AM +1d |
| 11:00 PM | 8:00 AM +1d |
Converting Coordinated Universal Time to Japan Standard Time
Coordinated Universal Time (UTC) and Japan Standard Time (JST) are separated by a 9 hours time difference. JST is 9 hours ahead of UTC. UTC is UTC+0, while JST is UTC+9, used in Japan.
When converting from UTC to JST, the key reference points to remember are: 9:00 AM UTC equals 6:00 PM JST, 12:00 PM noon UTC equals 9:00 PM JST, and 5:00 PM UTC equals 2:00 AM JST. The conversion table above shows every hour of the day mapped between these two time zones.
Scheduling Across UTC and JST
For professionals scheduling meetings between UTC and JST, finding overlapping business hours is essential. Standard business hours are typically 9:00 AM to 5:00 PM in each time zone. Given the 9 hours difference, the window of overlap may be limited, making early morning or late evening calls necessary for one party. Use the highlighted working hours in the conversion table above to quickly identify suitable meeting times.
Daylight Saving Time Considerations
UTC does not observe Daylight Saving Time, maintaining UTC+0 year-round. JST does not observe DST, staying at UTC+9 year-round.