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Japan ISO JP

日本

Eastern Asia · Asia

Japan is in Eastern Asia with Tokyo as capital. This profile summarizes ISO JP / JPN, +81, the yen (JPY), Japanese, Asia/Tokyo, the ###-#### postal pattern, left-hand traffic, and metric units — with yen noted as zero minor units in ISO 4217 terms.

Time zones now Calling codes ISO codes Postal format

Quick codes

Alpha-2 JP
Alpha-3 JPN
Numeric 392
Calling +81

Capital Tokyo
Calling code +81
Currency JPY · ¥
Time zones 1 IANA

Key facts

Concise statements from the verified fields on this page. Missing values stay unavailable — we do not invent statistics.

Japan's ISO 3166-1 codes are alpha-2 JP, alpha-3 JPN, and numeric 392. ISO alpha-2 and alpha-3 are different country-code formats.
Japan's international telephone calling code is +81.
Japan's currency in this dataset is Japanese yen (ISO 4217 JPY, symbol ¥). A currency symbol does not always uniquely identify a currency — prefer the ISO 4217 code.
The capital listed for Japan is Tokyo.
Japan is listed with one primary IANA time zone on this page: Asia/Tokyo.
Japan's postal-code format in this dataset is “###-####”. Postal-code format validation does not confirm that an address exists.
Driving side listed: left.
Measurement system listed: metric.

At a glance

Country-specific notes grounded in the verified fields below.

Asia/Tokyo (JST, UTC+09:00) without daylight saving in current IANA rules.
JPY has 0 minor units in the ISO 4217 reference (no “cents”).
Native name 日本; language Japanese (jpn).

Names & geography

Official name: Japan
Native name: 日本
Capital: Tokyo
Continent: Asia
Region: Asia
Subregion: Eastern Asia

Codes & dialing

ISO 3166-1 alpha-2 ISO 3166-1: JP Two-letter country code as used in this catalog.
ISO 3166-1 alpha-3 ISO 3166-1: JPN
ISO 3166-1 numeric ISO 3166-1: 392 Three-digit UN M49-style numeric code from the dataset.
International calling code Calling +N: +81 Country calling code +81. Drop the leading 0 of the national number when dialing from abroad.
Internet TLD: .jp

A country calling code (telephone dialing prefix) is not the same as an ISO country code. Codes above are third-party reference values — not an official ISO product listing.

Currency & languages

Currency ISO 4217: Japanese yen (ISO 4217 JPY) · symbol ¥ · minor units: 0 Tender from the open-dataset snapshot — third-party reference, not live exchange rates. Prefer the ISO 4217 code when a symbol is shared.
Languages (dataset identifiers) ISO 639: Japanese jpn Identifiers as recorded in the assembled datasets — not a complete official language schedule.

Time zones

Live local time from IANA identifiers (server/OS tzdata). Offsets can change with daylight saving.

Asia/Tokyo

5:31:49 PM

UTC+09:00

Practical details

Postal code format Format only: ###-#### Seven-digit pattern commonly written ###-####.
Driving side Third-party: Left
Measurement system Reference: Metric Imperial listed for US, Liberia, and Myanmar in this snapshot; otherwise metric as the prevailing customary system in reference sources — not a legal metrology certificate.
Area km²: 377,835 km² Reference snapshot area in square kilometres when present.
Population Estimate: 123,300,000 Third-party reference estimate · effective year 2024 (not a live census)
Nationality (demonym): Japanese
Independent: Yes As recorded in the open dataset — not a legal status determination.
UN member: Yes As recorded in the open dataset — confirm with the United Nations for official membership lists.

Locale & conventions

Common practice for orientation — not a substitute for local legal or institutional rules.

Dates are often written YYYY年MM月DD日 or YYYY-MM-DD; era names appear in some official documents.
Currency: Japanese yen (¥ / JPY). The ¥ symbol is also associated with CNY in some fonts — pair with JPY.
International dialing: +81.

Trust & provenance

Data class: Third-party open reference data assembled for tools — not an official ISO, UN, or national-statistics publication.

Profile editorial date: 2026-10-23 (publication set for curated copy)
Source evaluation reviewed: 2026-10-22 (UTC calendar date)
Reference dataset snapshot: 2026-10-22 21:03:56
Effective dataset note: Imported static snapshot used by CountryCatalog / ref_* tables; population year typically 2024 from upstream snapshot metadata.
Live clocks: IANA via PHP at request time (depends on server/OS tzdata). Not a stored permanent national offset.

Primary attributions: ISO 3166-1 / ISO 4217 / ISO 639 code systems; mledoze/countries (ODbL); dr5hn/countries-states-cities-database (ODbL); samayo/country-json (MIT); IANA Time Zone Database.

Standards & definitions in use

ISO 3166-1: Country codes: alpha-2, alpha-3, and numeric identifiers as used in our catalog (not a sold ISO product dump).
ISO 4217: Currency codes (and symbols when present). Symbols may be shared across currencies.
ISO 639 (dataset identifiers): Language codes as recorded in the assembled open datasets — not a complete legal language schedule.
International calling codes: Country/territory telephone dialing prefixes (E.164-style +N). Distinct from ISO country codes.
IANA Time Zone Database: Zone identifiers and live offsets via PHP/OS tzdata at request time. Offsets can change with daylight saving.
Area (km²): Land/area figure from the reference snapshot, expressed in square kilometres when present.
Population (estimate): Reference estimate with an effective year when known — not a live census API.

How empty values are labeled

Not available — missing from the verified dataset (not invented).
0 — a recorded zero when the source supplies zero (distinct from missing).
Does not apply — used only when a field is explicitly not applicable (rare).

Full source evaluation Report a correction

Data class: Third-party open reference data assembled for tools — not an official ISO, UN, or national-statistics publication.

Attribution: ISO 3166-1 / ISO 4217 / ISO 639 code systems; mledoze/countries (ODbL); dr5hn/countries-states-cities-database (ODbL); samayo/country-json (MIT); IANA Time Zone Database. Fields marked “Not available” are missing from those sources — not fabricated. A value of 0 means a recorded zero, not a missing value. Source review: 2026-10-22. Dataset snapshot: 2026-10-22 21:03:56. Full source evaluation. Report a correction.

Data limitations

Not an official ISO, UN, or national-statistics publication.
Population and area are reference estimates with effective year where known.
Postal checker validates format only — not delivery-point existence.
Currency finder does not show live FX rates (see Currency Converter for rates).
Driving side / measurement may be incomplete for some territories.
Administrative divisions are not bulk-published (avoids thin/incomplete geography pages).
Timezone “now” depends on server/OS tzdata freshness.
ODbL sources require attribution and share-alike considerations for redistributed database dumps.

Frequently asked questions

Does Japan observe daylight saving?

No under current IANA rules for Asia/Tokyo.

Why does yen show zero minor units?

ISO 4217 defines JPY with 0 fraction digits. Cash and pricing still use whole yen amounts.

What is the difference between a country calling code and an ISO country code?

A calling code is an international telephone dialing prefix (for example +92). An ISO 3166-1 country code identifies the country in data systems (for example PK, PAK, or 586). They serve different purposes and are not interchangeable.

Does a country always have one time zone?

No. Some countries use a single IANA zone; others span many. This profile lists the zones available in our catalog — use the country time-zones page for live clocks.

Does a valid postal-code format prove that an address exists?

No. Format checks only compare structure to a documented pattern. They do not confirm delivery points or that a code is currently assigned.

Where does this country data come from?

Fields are assembled from maintained open datasets (ISO codes, calling codes, currencies, languages, postal patterns, population/area) plus live IANA time zones via PHP. Editorial notes are written for this profile. Unavailable fields are labeled — we do not invent values.

Are population and area official census figures?

They are reference estimates from the dataset snapshot (year shown when available). For legal or statistical work, confirm with a national statistics office.