JST to UTC Time Converter

Convert Japan Standard Time (JST) to Coordinated Universal Time (UTC). Both time zones are shown live below; current offset between them is 9 hours behind.

Tokyo · Japan Standard Time
05:55:28
Monday, May 11, 2026
GMT+9 · UTC+09:00
UTC · Coordinated Universal Time
20:55:28
Sunday, May 10, 2026
UTC · UTC+00:00

Convert a specific time

From: JST (Tokyo)
To: UTC (UTC)
--:--

Daylight Saving status right now

JST (Japan Standard Time)
Observes DST
No
UTC (Coordinated Universal Time)
Observes DST
No

When can JST and UTC meet?

00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
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21
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JST
UTC
Both zones in working hours (9am-5pm)
One zone working
Off-hours
Columns are hours of the day in Tokyo (JST). Each row shows the local working-hours state in that zone for the same moment in time.
No overlap during strict 9-5 working hours; some flexibility needed.
If both sides are willing to extend to 8am-7pm, the available window is 17:00–18:00 JST (08:00–09:00 UTC).

Hour-by-hour JST to UTC conversion table

JST time (Tokyo)UTC time (UTC)Status
00:00 Mon15:00 SunUTC working
01:00 Mon16:00 SunUTC working
02:00 Mon17:00 SunOff-hours both sides
03:00 Mon18:00 SunOff-hours both sides
04:00 Mon19:00 SunOff-hours both sides
05:00 Mon20:00 SunOff-hours both sides
06:00 Mon21:00 SunOff-hours both sides
07:00 Mon22:00 SunOff-hours both sides
08:00 Mon23:00 SunOff-hours both sides
09:00 Mon00:00 MonJST working
10:00 Mon01:00 MonJST working
11:00 Mon02:00 MonJST working
12:00 Mon03:00 MonJST working
13:00 Mon04:00 MonJST working
14:00 Mon05:00 MonJST working
15:00 Mon06:00 MonJST working
16:00 Mon07:00 MonJST working
17:00 Mon08:00 MonOff-hours both sides
18:00 Mon09:00 MonUTC working
19:00 Mon10:00 MonUTC working
20:00 Mon11:00 MonUTC working
21:00 Mon12:00 MonUTC working
22:00 Mon13:00 MonUTC working
23:00 Mon14:00 MonUTC working

Times computed for today in each zone using the IANA time zone database. The conversion accounts for daylight saving time wherever applicable.

About these time zones

Japan Standard Time (JST)
IANA identifier
Asia/Tokyo
Current UTC offset
UTC+09:00
Current abbreviation
GMT+9
Major cities in this zone
TokyoOsakaKyotoYokohama
Coordinated Universal Time (UTC)
IANA identifier
UTC
Current UTC offset
UTC+00:00
Current abbreviation
UTC
Major cities in this zone
UTC

Sun today in Tokyo and UTC

Tokyo
Sunrise
04:41
Sunset
18:36
Solar noon
11:39
Daylight
13h 55m

Related converters

UTC to JST (reverse)JST to ESTJST to PSTJST to GMTJST to CETJST to ISTEST to UTCPST to UTCGMT to UTCCET to UTCIST to UTC
Looking for local time? See time in Tokyo or time in UTC.

Frequently asked questions

What is the time difference between JST and UTC right now?+
UTC (Coordinated Universal Time) is currently 9 hours behind JST (Japan Standard Time). The exact difference can change when one or both zones transition into or out of daylight saving time.
Does JST or UTC observe daylight saving time?+
JST: does not observe daylight saving time. UTC: does not observe daylight saving time.
When is the best time to schedule a meeting between JST and UTC?+
Standard 9-5 hours do not overlap. Extending to 8am-7pm gives a window of 17:00–18:00 JST (08:00–09:00 UTC).
What time is it in UTC when it is 12:00 noon in Tokyo?+
When it is 12:00 Mon in Tokyo (JST), it is 03:00 Mon in UTC (UTC).
Which IANA time zone identifiers are used for JST and UTC?+
JST maps to "Asia/Tokyo" in the IANA database. UTC maps to "UTC". These identifiers are what most software libraries use to convert times accurately, including DST handling.
Is Tokyo ahead of or behind UTC?+
Whether Tokyo (JST) is ahead of or behind UTC (UTC) depends on the current UTC offsets. Right now UTC is 9 hours behind JST. The live converter and side-by-side clocks above always reflect the current direction.
What are the current UTC offsets for JST and UTC?+
JST is UTC+09:00 (GMT+9) and UTC is UTC+00:00 (UTC). Both offsets shift by one hour when the corresponding region enters or exits daylight saving time, so the live values on this page are the source of truth.
Can I schedule meetings during business hours for both JST and UTC?+
Not during a strict 9am-5pm window. If both sides flex to 8am-7pm, the available meeting window between JST and UTC is 17:00–18:00 JST.