United Kingdom vs Japan — Country Comparison

The flag of the United Kingdom — the Union Jack — has a blue field. It features the white-edged red cross of Saint George superimposed on the diagonal red cross of Saint Patrick which is superimposed on the diagonal white cross of Saint Andrew.United Kingdom VS The flag of Japan features a crimson-red circle at the center of a white field.Japan

United Kingdom and Japan side by side: Japan is the larger country (377,930 km² vs 244,376 km², roughly 1.5× the size), while Japan has the bigger population (123.2 million vs 69.3 million). The full comparison table below covers capitals, currencies, languages, dialling codes, timezones and more.

Facts last checked 31 August 2026.

FactUnited KingdomJapan
CapitalLondonTokyo
Population69,281,437123,210,000
Area244,376 km²377,930 km²
CurrencyBritish poundJapanese yen
LanguageEnglishJapanese
Dialling code+44+81
Main timezoneUTC+00:00UTC+09:00
Drives on theLeftLeft
RegionNorthern EuropeEastern Asia
Emergency number999 (or 112)110 (police) / 119 (fire & ambulance)

Visiting United Kingdom or Japan?

As an Amazon Associate we earn from qualifying purchases. We are also a member of the CJ Affiliate and AWIN affiliate networks. Links below are affiliate links.

AMAZON

United Kingdom Travel Guide
Plan a trip to United Kingdom.

Check Price →
AMAZON

Japan Travel Guide
Plan a trip to Japan.

Check Price →
AMAZON

Scratch Off World Map
Mark off United Kingdom, Japan and everywhere else you have been.

Check Price →

United Kingdom vs Japan — FAQ

Which is bigger, United Kingdom or Japan?

Japan is bigger by area: 377,930 km² vs 244,376 km², roughly 1.5× the size of United Kingdom.

Is United Kingdom bigger than Japan?

No — Japan is larger at 377,930 km² vs 244,376 km² for United Kingdom.

Which has more people, United Kingdom or Japan?

Japan has the larger population: 123,210,000 (123.2 million) vs 69,281,437 (69.3 million).

How does the size of United Kingdom compare to Japan?

Japan (377,930 km²) is about 1.5× larger than United Kingdom (244,376 km²).

Do United Kingdom and Japan use the same currency?

No — United Kingdom uses the British pound and Japan uses the Japanese yen.

Are United Kingdom and Japan on the same continent?

No — United Kingdom is in Europe and Japan is in Asia.

What is the time difference between United Kingdom and Japan?

Japan is 9h ahead of United Kingdom (UTC+00:00 vs UTC+09:00), not accounting for daylight saving changes.

Do United Kingdom and Japan share an official language?

No — United Kingdom and Japan do not share an official language.

Do United Kingdom and Japan share a border?

No — United Kingdom and Japan do not share a land border.

Which is more densely populated, United Kingdom or Japan?

Japan is more densely populated at roughly 326 people per km², compared to 284 for United Kingdom.

More comparisons

This page contains affiliate links. We may earn a small commission if you purchase through our links, at no extra cost to you. Learn more.

Last updated: