Tonga Country info Continent - Oceania Tonga capital - Nukuʻalofa Tonga ISO code - TO Tonga ISO3 code - TON Tonga dialing prefix - 676 Next States 'Eua Ha`apai Niuas Tongatapu Vava`u See Also: set alarm for noon today set the timer for 4 minutes dice roller 5evirtual wheel spinnerdefine stopwatchonline real time clock with secondshow many working business days until the April 4, 2032