Real-time conversion
Handles daylight saving
No data sent anywhere
Free, always
The time difference is 10 hours GMT is ahead.
| AEST (Sydney) | GMT (London) |
|---|---|
| 9:00 AM AEST | 11:00 PM GMT (previous day) |
| 12:00 PM AEST | 2:00 AM GMT (previous day) |
| 6:00 PM AEST | 8:00 AM GMT |
Enter or select a time in AEST (Sydney)
The tool instantly calculates the corresponding GMT (London) time
Copy the result or adjust the input for other times
No registration or installation required — everything runs in your browser
The standard time difference between AEST and GMT is 10 hours, with GMT ahead.
Note: During daylight saving time transitions, the difference may temporarily differ by an hour. Times automatically adjust based on the date and applicable time zone rules from the IANA Time Zone Database.
GMT is 11 hours behind AEST, shifting by an hour around daylight-saving changes. 100% free, no registration, and fully private — every conversion happens in your browser.
Uses the IANA database for Australia/Sydney and Europe/London, so daylight saving is applied automatically — no manual offset math.
Convert AEST to GMT the moment you pick a time. No signup, no ads in your way, nothing to install.
Spot the wide 11 hours gap between Sydney and London so you can plan async or off-hours calls.
Every conversion runs locally in your browser using your device clock. Your dates and times never touch a server.
Reverse conversion
From Australian Eastern Time
To Greenwich Mean Time
To Greenwich Mean Time
To Greenwich Mean Time
To Greenwich Mean Time
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