Time Difference: Tokyo to Hong Kong

Summary

See the current time in Tokyo and Hong Kong side by side, with the fixed UTC offset (JST is UTC+9, HKT is UTC+8) — Tokyo is always 1 hour ahead, updated live 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 Asia/Hong_Kong time (HKT, UTC+8).
4. The UTC offsets of both cities are compared — the difference is always 1 hour.
5. All values — Tokyo time, Hong Kong time, and the offset — refresh every second.
6. Enter any Tokyo time in the converter to instantly see the matching Hong Kong time.

Use cases

• Scheduling video calls between Tokyo and Hong Kong offices.
• Checking whether a colleague in Hong Kong is within business hours.
• Planning Japan-Hong Kong travel and arrival time comparisons.
• Remote teams coordinating daily standups across Japan and Hong Kong.
• Converting a Tokyo meeting time to its Hong Kong equivalent.
• Finance professionals tracking market open hours across the Tokyo and Hong Kong exchanges.
• Journalists in Tokyo checking live broadcast times for Hong Kong events.
• Students and teachers arranging online lessons between Japan and Hong Kong.

Frequently Asked Questions