City comparison · time difference and converter
Toronto is 5 hours behind London right now. London sits in United Kingdom on London; Toronto sits in Canada on Toronto. They are roughly 5,712 km apart (3,549 mi), a flight of about 7h 43m. London's metro holds around 9.5 million people; Toronto's around 6.4 million.
Slot 1
14:00 / 09:00
London / Toronto
Both inside business hoursSlot 2
15:00 / 10:00
London / Toronto
Both inside business hoursSlot 3
16:00 / 11:00
London / Toronto
Both inside business hoursEach row is one hour in London. Green rows are inside business hours in both cities; amber means only one side is at their desk; grey rows fall outside business hours in both.
No public holidays in United Kingdom or Canada this month.
Great-circle distance
5,712 km
(3,549 mi)
Approximate flight
7h 43m
850 km/h cruise + 1h taxi/climb/descent
Jet lag
5h
Roughly 1 day to adjust per timezone crossed
The heatmap gives you the shape of the day. If you need to convert one specific hour — say a customer call or a release window — open the converter with both cities already loaded.
Open in converter →The difference between London and Toronto is not really a number, it's a daily rhythm. Toronto is 5 hours behind London on the clock today, but the lived version is that London is ahead in the calendar, so by the time Toronto comes online, half of London's day is already gone. That gap, more than the raw offset, is what teams have to design around.
In London, the working day picks up earliest in the financial districts — City of London desks switch on by 07:30 for the European open. The mood in Toronto is its own story: Toronto settles into the evening at the usual hour, with the local commuter pattern setting the pace. If you are scheduling between the two, the heatmap above marks the rows where both patterns line up.
Daylight saving is the other thing to keep an eye on. United Kingdom shifts the clock on the last Sunday of March and October; Canada either follows its region's DST pattern or stays put all year. When the two changes are weeks apart, the offset between London and Toronto is one hour off the usual for that stretch — a cliff that catches recurring calendar invites unless your calendar app rebases them automatically. Pin the meeting to a city, not an offset, and the tool handles the rest.
For travellers, the 7h 43m flight is the short version of the story. The longer one is jet lag: roughly one day of adjustment per timezone crossed, which means a trip across the 5-hour gap costs about 5 groggy days on each side. Pilots and cabin crew swear by morning sunlight and an early walk; whatever your routine, the wall-clock numbers above are the source of truth for your first morning in the new city.