Compare GMT and CET
See the current GMT to CET time difference, how DST changes the offset, and the best hours to schedule meetings.
How to Find the Time Difference Between GMT and CET
Open the GMT to CET comparison page: Go to https://www.xconvert.com/time-converter/gmt-vs-cet to load a visual comparison grid with GMT and CET already shown as separate rows. This page is useful when you need to schedule a call between London-based teams using Greenwich Mean Time and colleagues in Central Europe, such as Berlin, Paris, Madrid, Rome, or Amsterdam, where many finance, logistics, manufacturing, and SaaS teams operate.
Add relevant comparison cities: Click + Add City and search for cities such as London, Berlin, and Paris to compare specific locations that commonly use these offsets during part of the year. This is especially practical for cross-border business in European banking, EU legal coordination, airline operations, and remote product teams that need to see whether a meeting falls inside normal work hours across the UK and mainland Europe.
Drag to select a meeting window on the grid: Click Select to enter selection mode, then drag across the GMT row from 9:00 AM to 11:00 AM GMT; the purple highlighted range will show the corresponding 10:00 AM to 12:00 PM CET, because CET is 1 hour ahead of GMT. You can drag the center of the purple block to test other windows or resize with the left and right handles, which is useful for confirming that a UK morning operations call still lands within standard office hours for teams in Germany, France, Italy, or Spain.
Export and share the selected time range: Once a range is selected, use the export options for ICS download, Google Calendar, Gmail, Copy to clipboard, or Share link. For example, a UK logistics manager coordinating with a warehouse partner in Belgium can send the ICS file so both sides see the appointment in local time automatically, or use Share link and Copy to clipboard to circulate a confirmed slot in Slack or email without manually converting the hour.
GMT vs CET Offset Explained
GMT (Greenwich Mean Time) is UTC+0, while CET (Central European Time) is UTC+1, so CET is exactly 1 hour ahead of GMT. That means when it is 9:00 AM GMT, it is 10:00 AM CET; when it is 3:00 PM GMT, it is 4:00 PM CET. This one-hour difference matters for daily scheduling across the UK and continental Europe, especially for customer support coverage, transport dispatch, media broadcasts, and regional sales calls.
The seasonal complication is that CET is the standard-time label, not the summer-time label. Countries that use CET in winter usually switch to CEST (Central European Summer Time, UTC+2) in summer, while places observing GMT in winter, such as the UK, typically switch to BST (British Summer Time, UTC+1) in summer. In Europe, daylight saving time typically begins on the last Sunday in March and ends on the last Sunday in October; for 2025, clocks move forward on 30 March 2025 and move back on 26 October 2025.
Because both the UK and most CET countries change clocks on the same European DST dates, the practical difference between them is often still 1 hour year-round when comparing the UK to countries like Germany, France, Spain, Italy, the Netherlands, Belgium, Austria, and Poland. In winter, the comparison is usually GMT vs CET = 1 hour; in summer, it becomes BST vs CEST = 1 hour. However, if you are comparing pure time-zone labels rather than countries currently observing daylight saving time, then GMT remains UTC+0 and CET remains UTC+1 by definition.
CET is used across a large part of continental Europe, including major business centers such as Berlin (population about 3.8 million), Madrid (about 3.3 million), Rome (about 2.7 million), and Paris (about 2.1 million city proper), although some of these cities operate on CEST during summer months. This matters for real-world coordination: European stock exchange activity, trucking routes through Germany and Benelux, and airline schedules into hubs like Frankfurt, Paris Charles de Gaulle, Amsterdam Schiphol, and Madrid-Barajas often require precise awareness of whether you are dealing with standard time or summer time on a given date.
For practical planning, a 9:00 AM GMT start from a UK-based team corresponds to 10:00 AM CET, which is convenient for same-day collaboration. But a 5:00 PM CET deadline is only 4:00 PM GMT, so UK teams working with partners in mainland Europe often need to deliver documents or approvals earlier than they would for domestic schedules. This is particularly relevant in procurement, customs brokerage, legal filings, and B2B account management where end-of-business-day cutoffs are tied to the local clock.
Frequently Asked Questions
What is the exact time difference between GMT and CET?
The exact difference is 1 hour, with CET ahead of GMT. If it is 12:00 noon in GMT, it is 1:00 PM in CET, which is why meetings between the UK and Central Europe are often easy to arrange during overlapping office hours.
Is CET always 1 hour ahead of GMT?
Yes, CET as a time-zone standard is always UTC+1, while GMT is always UTC+0, so the label-to-label difference is always 1 hour. In real life, though, many countries do not stay on CET all year; they switch to CEST (UTC+2) in summer, and the UK often switches from GMT to BST (UTC+1), so users should check the date if they are comparing countries rather than fixed offsets.
How does daylight saving time affect GMT and CET?
Daylight saving time changes how countries use these offsets seasonally, even though the base labels themselves remain fixed. In most of Europe, DST starts on the last Sunday in March and ends on the last Sunday in October; in 2025, that means 30 March and 26 October, and many CET countries move to CEST, while the UK moves from GMT to BST. Because both regions usually change on the same dates, the UK and Central Europe often remain 1 hour apart even after the seasonal switch.
When it is 9 AM GMT, what time is it in CET?
When it is 9:00 AM GMT, it is 10:00 AM CET. This is a common conversion for European business because a UK morning check-in can still fit neatly into the start of the workday in Germany, France, Belgium, the Netherlands, or Italy.
Is London in CET or GMT?
London is associated with GMT in winter and BST in summer, not CET. That means a London office may appear one hour behind Berlin or Paris throughout the year in practical business scheduling, but the label changes seasonally depending on whether the UK is on standard time or daylight saving time.
Which countries use CET?
CET is used in much of continental Europe during standard time, including countries such as Germany, France, Italy, Spain, Belgium, the Netherlands, Luxembourg, Poland, Austria, Switzerland, Czechia, Slovakia, Hungary, Slovenia, Croatia, Serbia, North Macedonia, Albania, and others. Many of these countries are deeply connected through EU trade, road freight, aviation, automotive manufacturing, and financial services, so CET is one of the most commercially important time zones in Europe.
How do I schedule a call between GMT and CET without making a mistake?
Use the visual grid on the converter page and choose the exact date first, especially around the March and October clock-change weekends. Then drag a meeting window directly on the timeline so you can confirm, for example, that 2:00 PM GMT corresponds to 3:00 PM CET, and export the result via Google Calendar, ICS, Gmail, Copy to clipboard, or Share link so every participant receives the correct local time automatically.
Why do GMT and CET matter for European business operations?
The one-hour difference affects daily cutoffs, transport departures, trading desks, and customer support handoffs between the UK and mainland Europe. A shipment released at 6:00 PM CET may need action from a UK team by 5:00 PM GMT, and a software deployment planned for 8:00 AM GMT reaches Central European stakeholders at 9:00 AM CET, which is often ideal for engineering, DevOps, and operations teams starting the day.