TimeandTool

GMT to UTC Converter

Greenwich Mean Time (UTC+1:00) → Coordinated Universal Time (UTC+0:00)

GMT (Greenwich Mean Time)

09:24:20 AM

Sun, Apr 19, 2026

UTC+1

1 hour behind

UTC (Coordinated Universal Time)

08:24:20 AM

Sun, Apr 19, 2026

UTC+0:00

Time Difference

GMT offset
UTC+1:00
UTC offset
UTC+0:00
Difference
1 hour behind
Best overlap
10 AM–4 PM / 9 AM–3 PM

Time Comparison

GMT (Greenwich Mean Time)Greenwich Mean Time9:24 AM
UTC (Coordinated Universal Time)Coordinated Universal Time8:24 AM
12am
1am
2am
3am
4am
5am
6am
7am
8am
NOW9am
10am
11am
12pm
1pm
2pm
3pm
4pm
5pm
6pm
7pm
8pm
9pm
10pm
11pm
APR 1811pm-1d
APR 1912am
1am
2am
3am
4am
5am
6am
7am
8am
9am
10am
11am
12pm
1pm
2pm
3pm
4pm
5pm
6pm
7pm
8pm
9pm
10pm
BusinessMorning/EveningDawn/DuskNight

24-Hour Conversion Table

Based on standard time (Jan 15 reference). Actual times may differ during DST transitions.

GMTUTC
1:00 AM12:00 AM
2:00 AM1:00 AM
3:00 AM2:00 AM
4:00 AM3:00 AM
5:00 AM4:00 AM
6:00 AM5:00 AM
7:00 AM6:00 AM
8:00 AM7:00 AM
9:00 AM8:00 AM
10:00 AM9:00 AM
11:00 AM10:00 AM
12:00 PM11:00 AM
1:00 PM12:00 PM
2:00 PM1:00 PM
3:00 PM2:00 PM
4:00 PM3:00 PM
5:00 PM4:00 PM
6:00 PM5:00 PM
7:00 PM6:00 PM
8:00 PM7:00 PM
9:00 PM8:00 PM
10:00 PM9:00 PM
11:00 PM10:00 PM
12:00 AM11:00 PM-1 day

Highlighted rows indicate business hours (9 AM–5 PM) in GMT.

What is GMT?

Full name
Greenwich Mean Time
UTC offset
UTC+1:00
IANA timezone
Europe/London
Observes DST
Yes

What is UTC?

Full name
Coordinated Universal Time
UTC offset
UTC+0:00
IANA timezone
UTC
Observes DST
No

Countries observing GMT

  • •United Kingdom (winter)
  • •Iceland
  • •Ghana
  • •Senegal
  • •Gambia
  • •Sierra Leone

Countries observing UTC

  • •Universal standard — used in aviation, GPS, and computing worldwide

Frequently Asked Questions

GMT stands for Greenwich Mean Time. It is at UTC+1:00 and is observed in United Kingdom (winter), Iceland, Ghana.
UTC stands for Coordinated Universal Time. It is at UTC+0:00 and is observed in Universal standard — used in aviation, GPS, and computing worldwide.
UTC is 1 hour behind GMT. GMT is at UTC+1:00 and UTC is at UTC+0:00.
GMT is 1 hour ahead UTC.
Yes, GMT (Greenwich Mean Time) observes Daylight Saving Time. The UTC offset changes seasonally.
No, UTC (Coordinated Universal Time) does not observe Daylight Saving Time. The offset stays at UTC+0:00 year-round.
GMT (Greenwich Mean Time) is used in: United Kingdom (winter), Iceland, Ghana, Senegal, Gambia, Sierra Leone.
The best overlap of business hours between GMT and UTC is approximately 10 AM–4 PM / 9 AM–3 PM.

Related Converters

GMT to ISTGMT to ESTGMT to PSTGMT to CSTIST to UTCEST to UTCPST to UTCCST to UTC

From the Blog

Portugal Daylight Saving Time 2026: Dates, Rules, and Every EU Country

Portugal clocks change on March 29 and October 25, 2026. Complete guide: exact dates, times, and daylight saving rules for every EU country in 2026.

8 min read

12 Strangest Time Zone Quirks Around the World (2026)

From China's single time zone spanning 5 geographic zones to Nepal's unique 15-minute offset — the most surprising timezone anomalies and the political stories behind them.

11 min read

FIFA World Cup 2026 Time Zones: 16 Host Cities and When to Watch Every Match

Complete timezone guide for the 2026 FIFA World Cup. Find kick-off times in your local time zone for all 104 matches across 16 host cities in the US, Mexico, and Canada.

14 min read
HomeClockSunCalc