BRT ↔ JST Time Converter

Convert BRT to JST instantly. Brasilia Time is UTC-3 and Japan Standard Time is UTC+9 — a 12h difference. Enter any time in either field — both are fully editable. Use the ⇄ button to swap directions.

🕐 Live Current Times

BRT
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Brasilia Time
12h ahead
⇄ JST→BRT
JST
--:--:--
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Japan Standard Time

⚡ Bidirectional Time Converter

BRT (UTC-3) → JST (UTC+9) · Difference: 12h ahead (auto-adjusts for DST)

ℹ️ Timezone Details

BRT Offset
UTC-3
JST Offset
UTC+9
Difference
12h ahead
BRT Full Name
Brasilia Time
JST Full Name
Japan Standard Time
Vice Versa
JST → BRT ↗

🤝 Best Meeting Hours Between BRT and JST

Because JST is 12h ahead of BRT, use this table to plan calls that fall in reasonable working hours for both sides.

BRTJSTSuitability
7:00 AM7:00 PMGood — early morning start
8:00 AM8:00 PMBest overlap
9:00 AM9:00 PMBest overlap
10:00 AM10:00 PMBest overlap
11:00 AM11:00 PMGood — late afternoon

🏙️ Cities Covered by Each Time Zone

BRT Cities
São Paulo, Rio de Janeiro, Brasília, Salvador, Fortaleza, Belo Horizonte, Manaus
JST Cities
Tokyo, Osaka, Kyoto, Yokohama, Nagoya, Sapporo, Fukuoka

📋 Full 24-Hour Conversion Table — BRT to JST

BRT (12h)BRT (24h)JST (12h)JST (24h)DayType
12:00 AM00:0012:00 PM12:00—Night
1:00 AM01:001:00 PM13:00—Night
2:00 AM02:002:00 PM14:00—Night
3:00 AM03:003:00 PM15:00—Night
4:00 AM04:004:00 PM16:00—Night
5:00 AM05:005:00 PM17:00—Night
6:00 AM06:006:00 PM18:00—
7:00 AM07:007:00 PM19:00—
8:00 AM08:008:00 PM20:00—
9:00 AM09:009:00 PM21:00—Business
10:00 AM10:0010:00 PM22:00—Business
11:00 AM11:0011:00 PM23:00—Business
12:00 PM12:0012:00 AM00:00+1 DayBusiness
1:00 PM13:001:00 AM01:00+1 DayBusiness
2:00 PM14:002:00 AM02:00+1 DayBusiness
3:00 PM15:003:00 AM03:00+1 DayBusiness
4:00 PM16:004:00 AM04:00+1 DayBusiness
5:00 PM17:005:00 AM05:00+1 DayBusiness
6:00 PM18:006:00 AM06:00+1 Day
7:00 PM19:007:00 AM07:00+1 Day
8:00 PM20:008:00 AM08:00+1 Day
9:00 PM21:009:00 AM09:00+1 Day
10:00 PM22:0010:00 AM10:00+1 DayNight
11:00 PM23:0011:00 AM11:00+1 DayNight

Note: this table uses a fixed offset. During Daylight Saving Time the difference may change — use the live converter above which adjusts automatically.

🔗 Related Converters

💡 How to Convert BRT to JST

1
Find the offset — Brasilia Time is UTC-3 and Japan Standard Time is UTC+9. The difference between them is 12h ahead.
2
Use either input field — Type a time in the BRT field to get the JST equivalent, or type in the JST field to get the BRT time. Both fields are editable.
3
Swap directions — Click ⇄ to instantly swap the conversion direction, or visit the JST to BRT page.
4
Check the table — The 24-hour reference table shows every hour converted, with working hours marked green and late night/early morning marked orange.
5
Watch for day changes — Some times cross midnight, so a "+1 Day" or "-1 Day" note appears to show the date is different in the converted timezone.

❓ FAQ — BRT to JST

What is the time difference between BRT and JST?

Japan Standard Time (JST) is 12h ahead of Brasilia Time (BRT).

How do I convert BRT to JST?

Use the converter above — type any time in the BRT field and the JST result appears instantly. You can also refer to the 24-hour table on this page.

Is JST ahead or behind BRT?

Japan Standard Time (JST) is 12h ahead of Brasilia Time (BRT).

How do I convert JST back to BRT?

Simply type in the JST field in the bidirectional converter above — it works in both directions. Or visit the dedicated JST to BRT converter page.

What is the best overlap time for meetings between BRT and JST?

Use the meeting hours table above to find windows where both timezones fall within reasonable working hours.