Time Difference: Tokyo to Sydney

Summary

See the current time in Tokyo and Sydney side by side, with the live UTC offset (JST is UTC+9, Sydney is AEDT UTC+11 or AEST UTC+10), updated every second.

How it works

1. Your browser reads the current moment from your device clock.
2. It converts that moment to Asia/Tokyo time (JST, UTC+9) using the IANA timezone database built into modern browsers.
3. The same moment is converted to Australia/Sydney time (AEDT or AEST depending on the season).
4. The UTC offsets of both cities are compared to calculate the exact hour difference.
5. All three values — Tokyo time, Sydney time, and the offset — refresh every second.
6. When Sydney switches between AEDT and AEST, the displayed offset adjusts automatically.

Use cases

• Scheduling video calls between Tokyo and Sydney offices.
• Checking if a colleague in Sydney is still at their desk.
• Planning Japan-Australia travel and arrival time comparisons.
• Remote teams coordinating daily standups across Japan and New South Wales.
• Finding overlapping business hours for Tokyo-Sydney meetings.
• Converting a Tokyo meeting time to its Sydney equivalent.
• Journalists in Tokyo checking broadcast times for live Australian events.
• Students and teachers arranging online lessons between Japan and Australia.

Frequently Asked Questions