JST to UTC Time Converter

JST refers to the Asia/Tokyo timezone, currently ++9 (GMT+9). UTC refers to UTC, currently +0 (UTC). Timezone abbreviation meanings and offsets are calculated live from the IANA tz database, so Daylight Saving Time is always applied correctly.

Key Facts

• JST (Asia/Tokyo): current live offset ++9.
• UTC (UTC): current live offset +0.
• Time difference is computed from live IANA tzdb offsets and may shift by one hour during DST transitions.