JST to UTC Converter – Japan Standard Time to Coordinated Universal Time
UTC is 9 hours behind JST. JST (Japan Standard Time) is UTC+9 all year, while UTC (Coordinated Universal Time) is UTC+0 all year. The live clocks below show the current time in both zones, updated every second.
JST to UTC Conversion Table (Hour by Hour)
Standard-time conversion from Japan Standard Time to Coordinated Universal Time.
| JST (UTC+9) | UTC (UTC+0) |
|---|---|
| 12:00 AM | 3:00 PM (previous day) |
| 1:00 AM | 4:00 PM (previous day) |
| 2:00 AM | 5:00 PM (previous day) |
| 3:00 AM | 6:00 PM (previous day) |
| 4:00 AM | 7:00 PM (previous day) |
| 5:00 AM | 8:00 PM (previous day) |
| 6:00 AM | 9:00 PM (previous day) |
| 7:00 AM | 10:00 PM (previous day) |
| 8:00 AM | 11:00 PM (previous day) |
| 9:00 AM | 12:00 AM |
| 10:00 AM | 1:00 AM |
| 11:00 AM | 2:00 AM |
| 12:00 PM | 3:00 AM |
| 1:00 PM | 4:00 AM |
| 2:00 PM | 5:00 AM |
| 3:00 PM | 6:00 AM |
| 4:00 PM | 7:00 AM |
| 5:00 PM | 8:00 AM |
| 6:00 PM | 9:00 AM |
| 7:00 PM | 10:00 AM |
| 8:00 PM | 11:00 AM |
| 9:00 PM | 12:00 PM |
| 10:00 PM | 1:00 PM |
| 11:00 PM | 2:00 PM |
Frequently Asked Questions
What is the time difference between JST and UTC?
UTC is 9 hours behind JST. JST (Japan Standard Time) is UTC+9 and UTC (Coordinated Universal Time) is UTC+0.
How do I convert JST to UTC?
Take your time in JST and subtract 9 hours. For example, 9:00 AM JST is 12:00 AM in UTC. The live clocks at the top of this page always show the current conversion.
Does daylight saving time affect JST to UTC conversion?
No. Neither JST nor UTC observes daylight saving time, so the difference between them is the same all year round.
What is the best time for a meeting between JST and UTC?
Look for overlap between 9:00 AM-6:00 PM working hours in both zones using the conversion table above. UTC is 9 hours behind JST, so overlap is limited - early morning in one zone and evening in the other usually works best.