Tonga Flag SVGTonga Country Codes

Tonga, formally known as the Kingdom of Tonga, is situated in Polynesia, a subregion of the region Oceania. Its capital city is Nuku'alofa. Tonga is identified by various country codes. The ISO 3166-1-Alpha-2 code, commonly referred to as the 2-letter country code for Tonga, is TO, while the ISO 3166-1-Alpha-3 code, known as the 3-letter country code, is TON. Similarly, the ISO 3166-1 numeric code for Tonga is 776. When connecting via phone, the dialing code for Tonga is +676, which is essential for initiating calls to phone numbers in Tonga. Online, websites in Tonga are distinguished by the top-level domain (TLD) .to, indicating their geographic origin. The currency utilized in Tonga is the Pa’anga, denoted by the currency alphabetic code TOP. Commonly known as the Pa’anga, it is the primary currency for transactions within the country.

For a comprehensive reference encompassing major country codes, currency codes, and timezones relevant to Tonga, please refer the tables below:

Country details

Formal namethe Kingdom of Tonga
Sub regionPolynesia

ISO Codes

ISO 3166-1 Alpha-2TO
ISO 3166-1 Alpha-3TON
ISO 3166-1 Numeric776

Dialing Code

Dialing code+676

Other Country Codes

Top Level
License plate codeTO
UN m49 code776
GAUL code245
MARC codeto
WMO codeTO
EDGAR codeW4
GS1 GTIN code-

Currency Codes

CurencyAlphabetic codeNumeric code


TimezoneOffset UTCOffset DSTTime
Pacific / Tongatapu+13:00+13:00

ISO 3166-2 Codes

Subdivision nameSubdivision categoryISO Code



Tonga is situated in Polynesia, which is a subregion of the continent of Oceania.

Nuku'alofa serves as the capital of Tonga.

The ISO 3166-1-Alpha-2, or two-letter country code, for Tonga is TO, while the ISO 3166-1-Alpha-3, or three-letter country code, is TON, and the ISO 3166-1 numeric code is 776. ISO, the International Organization for Standardization, is a global federation of national standards bodies.

The dialing code for Tonga is +676.

The top-level domain (TLD) for Tonga-specific internet addresses ends with .to.

The currency code of Tonga includes the currency alphabetic code TOP and the currency numeric code 776. The currency is referred to as the Pa’anga. ISO 4217 is a standard published by the International Organization for Standardization, defining alpha codes and numeric codes for representing currencies and providing information about the relationships between individual currencies and their minor units.

The license plate code for Tonga is TO.

The UN M49 code for Tonga is 776. UN M49, or the Standard Country or Area Codes for Statistical Use, is a standard used by the United Nations for statistical purposes.

The GAUL code for Tonga is 245. GAUL, or the Global Administrative Unit Layers, is a spatial database of administrative units for all countries worldwide. It is a project of the Food and Agriculture Organization of the United Nations.

The MARC code for Tonga is to. MARC, or machine-readable cataloging standards, are a set of digital formats for describing items cataloged by libraries, such as books, DVDs, and digital resources.

The FIPS code for Tonga is TN. FIPS, or Federal Information Processing Standards, are publicly announced standards developed by the National Institute of Standards and Technology for use in computer systems by non-military American government agencies and government contractors.

The WMO code for Tonga is TO. WMO, or the World Meteorological Organization, is a specialized agency of the United Nations responsible for promoting international cooperation on atmospheric science, climatology, hydrology, and geophysics.

The IOC code for Tonga is TGA. The International Olympic Committee uses three-letter abbreviation country codes to refer to each group of athletes that participate in the Olympic Games. Each geocode usually identifies a National Olympic Committee.

The EDGAR code for Tonga is W4. EDGAR, or the Electronic Data Gathering, Analysis, and Retrieval system, performs automated collection, validation, indexing, acceptance, and forwarding of submissions by companies and others who are required by law to file forms with the U.S. Securities and Exchange Commission.

The FIFA code for Tonga is TGA. FIFA, or Fédration Internationale de Football Association (International Federation of Association Football), assigns a three-letter country code to each of its member and non-member countries as name abbreviations for countries and dependent areas in official competitions.

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