EST to BST Time Converter
BST is 5 hours ahead of EST. The US East Coast is currently on EDT (UTC-4:00), and BST is UTC+1:00.
Best Time to Call Between EST and BST
Both zones are inside normal business hours between 9:00 AM and 12:00 PM EST — that's 2:00 PM to 5:00 PM BST. That's a 3-hour window.
both at work EST only BST only neither — hours along the strip are EST.
Common Times Converted
EST on the left, BST on the right.
EST to BST: Full 24-Hour Conversion Table
Shaded rows are working hours; the darker shade marks the hours when both zones are at work.
| EST | BST | Working hours |
|---|---|---|
| 12:00 AM | 5:00 AM | — |
| 1:00 AM | 6:00 AM | — |
| 2:00 AM | 7:00 AM | — |
| 3:00 AM | 8:00 AM | — |
| 4:00 AM | 9:00 AM | BST only |
| 5:00 AM | 10:00 AM | BST only |
| 6:00 AM | 11:00 AM | BST only |
| 7:00 AM | 12:00 PM | BST only |
| 8:00 AM | 1:00 PM | BST only |
| 9:00 AM | 2:00 PM | Both zones |
| 10:00 AM | 3:00 PM | Both zones |
| 11:00 AM | 4:00 PM | Both zones |
| 12:00 PM | 5:00 PM | EST only |
| 1:00 PM | 6:00 PM | EST only |
| 2:00 PM | 7:00 PM | EST only |
| 3:00 PM | 8:00 PM | EST only |
| 4:00 PM | 9:00 PM | EST only |
| 5:00 PM | 10:00 PM | — |
| 6:00 PM | 11:00 PM | — |
| 7:00 PM | 12:00 AM next day | — |
| 8:00 PM | 1:00 AM next day | — |
| 9:00 PM | 2:00 AM next day | — |
| 10:00 PM | 3:00 AM next day | — |
| 11:00 PM | 4:00 AM next day | — |
What EST and BST Actually Are
EST — Eastern Standard Time
New York, Toronto, Washington DC, Atlanta, Miami, Boston. Standing at UTC-5:00 as written, and the region does change its clocks, so its live offset moves by an hour twice a year. The next change is on Sunday, November 1, 2026, to EST. Australia also uses EST for its own Eastern Standard Time (UTC+10), now more often written AEST.
Eastern Standard Time is only actually in force from early November to mid-March. For the other eight months the same region is on EDT, which is why so many EST conversions are quietly wrong.
BST — British Summer Time
London, Manchester, Birmingham, Glasgow, and the rest of the UK from late March to late October. Standing at UTC+1:00 as written, and the region does change its clocks, so its live offset moves by an hour twice a year. The next change is on Sunday, October 25, 2026, to GMT. BST also stands for Bangladesh Standard Time (UTC+6). BDT is the clearer label for that one.
British Summer Time began in 1916 as a wartime fuel-saving measure and has run every year since, making it one of the oldest continuous daylight saving schemes in the world.
What This Means in Practice
Both sides change clocks, on different dates
Both regions observe daylight saving but do not switch on the same day, so for a week or two each spring and fall the gap between them is an hour different from the rest of the year. Those short windows are where recurring invitations quietly break.
Major Cities in Each Zone
Cities on EST
Cities on BST
Frequently Asked Questions
What is the time difference between EST and BST?
BST is 5 hours ahead of EST. That is the live figure. Taken strictly as written, the gap between EST and BST is 6 hours — the two differ because at least one of these regions is currently on daylight saving.
What is 9:00 AM EST in BST?
9:00 AM EST is 2:00 PM BST.
What are the best hours to schedule a call between EST and BST?
Between 9:00 AM and 12:00 PM EST, which is 2:00 PM to 5:00 PM BST. Both sides are inside normal business hours through that window.
Does the difference between EST and BST change during the year?
Yes. Both regions observe daylight saving, and they do not switch on the same dates, so the gap shifts by an hour at least twice a year. The next clock change is on Sunday, November 1, 2026.
Does EST always mean Eastern Standard Time?
Australia also uses EST for its own Eastern Standard Time (UTC+10), now more often written AEST.
Does BST always mean British Summer Time?
BST also stands for Bangladesh Standard Time (UTC+6). BDT is the clearer label for that one.