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都市データ提供元:GeoNames(CC BY 4.0)。タイムゾーンデータ:IANAタイムゾーンデータベース。

  1. WorldClockTools
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  3. CEST -> GMT

Timezone converter

CESTからGMTへの変換.

CEST → GMTGap: -1h7h 9-5 overlap

CEST to GMT currently uses Central European Time in Europe/Berlin and Greenwich Mean Time in Europe/London as the live reference pair, with a -1h live gap. CEST to GMT matters whenever Berlin and London need to coordinate across a -1h gap. The CEST side covers Germany and Spain, while GMT covers United Kingdom and Ivory Coast — that country mix is the practical reason this conversion shows up in calendars rather than the abstract offset math.

Last updated Apr 26, 2026. Offset math, DST behavior, and city coverage on both sides are refreshed from the live timezone dataset during the page revalidation window.

How this is calculated

How we calculate this
The current offset for each abbreviation is resolved against the live IANA timezone rules. Conversion accounts for DST transitions on both sides, so the gap between CEST and GMT can change by an hour twice a year.
Data sources
IANA Time Zone Database (offsets, DST). City attribution from GeoNames (CC BY 4.0).
Update cadence
Page regenerates daily; live offset values reflect the moment the page is rendered.
Reverse: GMT → CEST

From

CEST

Central European Time

Europe/Berlin · GMT+2 +02:00

--:--:--

Major markets in this grouping include Berlin, Madrid, Algiers, Rome.

To

GMT

Greenwich Mean Time

Europe/London · GMT+1 +01:00

--:--:--

Major markets in this grouping include London, Abidjan, Bamako, Dakar.

Scheduling snapshot

Current gap

-1h

CEST +02:00 vs GMT +01:00

9-to-5 overlap

7h

CEST 10:00 AM previous day to 5:00 PM previous day

Representative countries

Germany, Spain, and Algeria / United Kingdom, Ivory Coast, and Mali

Based on the busiest city and zone usage found in the current dataset.

Pair context

CEST (Berlin, +02:00) to GMT (London, +01:00) is currently a -1h conversion. Live coverage on the CEST side is anchored by Berlin, Madrid, Algiers, and Rome; the GMT side draws from London, Abidjan, Bamako, and Dakar.

CEST to GMT matters whenever Berlin and London need to coordinate across a -1h gap. The CEST side covers Germany and Spain, while GMT covers United Kingdom and Ivory Coast — that country mix is the practical reason this conversion shows up in calendars rather than the abstract offset math.

Both reference zones sit inside Europe, so this is a regional comparison rather than a long-haul conversion. The gap of -1h mostly affects intra-continental travel, regional logistics, and Europe-wide calendars.

Both CEST (Europe/Berlin) and GMT (Europe/London) observe daylight saving, but the shift dates do not always align. Expect short mismatch windows in spring and autumn when one side has changed and the other has not, which moves the live gap by an hour for several weeks at a time.

CEST and GMT sit exactly 1h apart, leaving a generous 7h of shared 9-to-5 time. With that much overlap, this pair behaves almost like a single workday, so meeting times are negotiable rather than forced into a narrow corner of the calendar.

Market coverage on both sides

CEST coverage on this page is led by Berlin, Germany, Madrid, Spain, Algiers, Algeria, and Rome, Italy, with 2 more in the live dataset. That mix is what makes CEST feel anchored to European working-day rhythms in practice rather than just an abbreviation on a chart.

GMT coverage is led by London, United Kingdom, Abidjan, Ivory Coast, Bamako, Mali, and Dakar, Senegal, with 2 more anchoring the wider label family. Combined with the CEST side, this conversion ends up describing intra-Europe regional logistics and travel coordination.

Digit-Roll Converter

Adjust the time — digits roll like an odometer. Swap button flips the zones.

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TO
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Common meeting times

CEST to GMT meeting times

Quick conversions for 9 AM, noon, 3 PM, 6 PM, and 9 PM based on today's local calendar.

CESTGMTDay relation
9:00 AM8:00 AMSun, Apr 26same day
12:00 PM11:00 AMSun, Apr 26same day
3:00 PM2:00 PMSun, Apr 26same day
6:00 PM5:00 PMSun, Apr 26same day
9:00 PM8:00 PMSun, Apr 26same day

GMT to CEST meeting times

Quick conversions for 9 AM, noon, 3 PM, 6 PM, and 9 PM based on today's local calendar.

GMTCESTDay relation
9:00 AM10:00 AMSun, Apr 26same day
12:00 PM1:00 PMSun, Apr 26same day
3:00 PM4:00 PMSun, Apr 26same day
6:00 PM7:00 PMSun, Apr 26same day
9:00 PM10:00 PMSun, Apr 26same day

Operational notes

CEST to GMT ranges from CEST 9:00 AM (which lands at GMT 8:00 AM) through CEST 9:00 PM (GMT 8:00 PM). CEST and GMT are close enough that this direction reads almost like a same-zone schedule — most CEST invites land on a sensible GMT hour without any extra effort.

GMT to CEST ranges from GMT 9:00 AM (which lands at CEST 10:00 AM) through GMT 9:00 PM (CEST 10:00 PM). GMT and CEST are close enough that this direction reads almost like a same-zone schedule — most GMT invites land on a sensible CEST hour without any extra effort.

Popular hour answers

These direct answers are here for the exact-intent searches people actually use, like “10 AM CEST to GMT” or “4 PM CEST in GMT”.

8 AM9 AM10 AM11 AM12 PM1 PM2 PM3 PM4 PM5 PM6 PM9 PM

What is 8 AM CEST in GMT?

8 AM CEST = 7:00 AM GMT (07:00). On today's live calendar that lands on Sun, Apr 26 in GMT, which means the answer is a same day conversion rather than a static offset lookup.

What is 9 AM CEST in GMT?

9 AM CEST = 8:00 AM GMT (08:00). On today's live calendar that lands on Sun, Apr 26 in GMT, which means the answer is a same day conversion rather than a static offset lookup.

What is 10 AM CEST in GMT?

10 AM CEST = 9:00 AM GMT (09:00). On today's live calendar that lands on Sun, Apr 26 in GMT, which means the answer is a same day conversion rather than a static offset lookup.

What is 11 AM CEST in GMT?

11 AM CEST = 10:00 AM GMT (10:00). On today's live calendar that lands on Sun, Apr 26 in GMT, which means the answer is a same day conversion rather than a static offset lookup.

What is 12 PM CEST in GMT?

12 PM CEST = 11:00 AM GMT (11:00). On today's live calendar that lands on Sun, Apr 26 in GMT, which means the answer is a same day conversion rather than a static offset lookup.

What is 1 PM CEST in GMT?

1 PM CEST = 12:00 PM GMT (12:00). On today's live calendar that lands on Sun, Apr 26 in GMT, which means the answer is a same day conversion rather than a static offset lookup.

What is 2 PM CEST in GMT?

2 PM CEST = 1:00 PM GMT (13:00). On today's live calendar that lands on Sun, Apr 26 in GMT, which means the answer is a same day conversion rather than a static offset lookup.

What is 3 PM CEST in GMT?

3 PM CEST = 2:00 PM GMT (14:00). On today's live calendar that lands on Sun, Apr 26 in GMT, which means the answer is a same day conversion rather than a static offset lookup.

What is 4 PM CEST in GMT?

4 PM CEST = 3:00 PM GMT (15:00). On today's live calendar that lands on Sun, Apr 26 in GMT, which means the answer is a same day conversion rather than a static offset lookup.

What is 5 PM CEST in GMT?

5 PM CEST = 4:00 PM GMT (16:00). On today's live calendar that lands on Sun, Apr 26 in GMT, which means the answer is a same day conversion rather than a static offset lookup.

What is 6 PM CEST in GMT?

6 PM CEST = 5:00 PM GMT (17:00). On today's live calendar that lands on Sun, Apr 26 in GMT, which means the answer is a same day conversion rather than a static offset lookup.

What is 9 PM CEST in GMT?

9 PM CEST = 8:00 PM GMT (20:00). On today's live calendar that lands on Sun, Apr 26 in GMT, which means the answer is a same day conversion rather than a static offset lookup.

Overlap window and DST radar

The live gap is -1h right now, based on Europe/Berlin at +02:00 and Europe/London at +01:00. Both zones change on October 25, 2026, so the gap usually stays close to -1h.

The most usable workday block right now is about 7 hours: CEST 10:00 AM previous day to 5:00 PM previous day, which lines up with GMT 9:00 AM previous day to 4:00 PM previous day.

Europe/Berlin changes on October 25, 2026 at about 2:30 AM, moving from +01:00 to +01:00.
Europe/London changes on October 25, 2026 at about 1:30 AM, moving from +00:00 to +00:00.

Reference zones

Europe/Berlin

GMT+2 · +02:00

Europe/London

GMT+1 · +01:00

These are the busiest live references selected from the abbreviation families on this page.

変換テーブル

CESTGMT
02:0001:00
03:0002:00
04:0003:00
05:0004:00
06:0005:00
07:0006:00
08:0007:00
09:0008:00
10:0009:00
11:0010:00
12:0011:00
13:0012:00
14:0013:00
15:0014:00
16:0015:00
17:0016:00
18:0017:00
19:0018:00
20:0019:00
21:0020:00
22:0021:00
23:0022:00
00:0023:00
01:0000:00

Top cities using CEST

Countries represented here include Germany, Spain, and Algeria.

BerlinGermanyMadridSpainAlgiersAlgeriaRomeItalyParisFranceHamburgGermanyBudapestHungaryWarsawPolandViennaAustriaBarcelonaSpain

Top cities using GMT

Countries represented here include United Kingdom, Ivory Coast, and Mali.

LondonUnited KingdomAbidjanIvory CoastBamakoMaliDakarSenegalKumasiGhanaOuagadougouBurkina FasoLoméTogoAccraGhanaConakryGuineaCamayenneGuinea

FAQ

How many hours is GMT ahead of CEST?
GMT is currently -1h relative to CEST, using Europe/Berlin and Europe/London as the live reference zones on this page.
What is the best workday overlap between CEST and GMT?
The current 9-to-5 overlap is about 7 hours: CEST 10:00 AM previous day to 5:00 PM previous day, which matches GMT 9:00 AM previous day to 4:00 PM previous day.
Does the CEST-GMT time difference change during DST?
The live gap is -1h right now, based on Europe/Berlin at +02:00 and Europe/London at +01:00. Both zones change on October 25, 2026, so the gap usually stays close to -1h.
Which cities commonly use CEST and GMT?
CEST commonly covers cities such as Berlin, Madrid, Algiers, and Rome, while GMT commonly covers cities such as London, Abidjan, Bamako, and Dakar.
Should I use CEST/GMT or exact IANA zones?
Use the abbreviations for a quick read, but use exact IANA zones such as Europe/Berlin and Europe/London when you need something precise in software, travel plans, or long-range scheduling.
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関連する変換

EST → GMTEST → CESTPST → GMTPST → CESTCST → GMTCST → CESTMST → GMTMST → CESTGMT → UTCGMT → ISTGMT → CETGMT → CEST

Related planning pages

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