London time to Perth time
Perth is 8 hours ahead of London in January and 7 hours ahead of in July (London BST/UTC+01:00 in summer; Perth GMT+8/UTC+08:00). Enter a London time below to convert it, or leave it blank to see the current time in both cities.
How to use the London to Perth time
- Type a London time (24-hour) and optionally a date, or leave blank for now.
- Click Convert.
- Read the Perth time and the working-hours table.
Time difference between London and Perth
Perth is 8 hours ahead of London in January and 7 hours ahead of in July. London observes daylight saving time and Perth does not, so the difference changes twice a year. London uses Europe/London time (UTC+00:00 in January, UTC+01:00 in July); Perth uses Australia/Perth (UTC+08:00 in January, UTC+08:00 in July).
Working week in London and Perth
London: Office hours 09:00–17:30, weekend Saturday–Sunday. Clocks go forward on the last Sunday of March (BST, UTC+1) and back on the last Sunday of October (GMT).
Perth: Australian Western Time, UTC+8 all year (Western Australia rejected daylight saving in a 2009 referendum). Two to three hours behind Sydney.
Quick conversion table (summer difference)
| London | Perth |
|---|---|
| 08:00 | 15:00 |
| 09:00 | 16:00 |
| 10:00 | 17:00 |
| 12:00 | 19:00 |
| 14:00 | 21:00 |
| 16:00 | 23:00 |
| 18:00 | 01:00 (next day) |
| 20:00 | 03:00 (next day) |
| 22:00 | 05:00 (next day) |
Table uses the July difference; the tool above applies the exact rule for any date.
Best time to call between London and Perth
Within normal office hours (09:00–18:00) in both cities: 9:00–10:00 London time. For a compromise outside that window, the fairest slots are the ones nearest each side's start or end of day, alternating who takes the inconvenient hour.
Reverse
Need the other direction? See Perth to London, or the general time zone converter.
Frequently asked questions
How many hours ahead is Perth from London?
Perth is 8 hours ahead of London in January and 7 hours ahead of in July.
When it is 12:00 noon in London, what time is it in Perth?
19:00 in summer (); use the tool for a specific date.
Does the converter handle daylight saving?
Yes, for the exact date you enter, using the IANA time-zone rules in your browser.
Privacy
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Last updated 2026-09-23.