How to say Happy Birthday in Japanese
The first is casual, for friends and family. Add gozaimasu for anyone you would speak politely to.
お誕生日おめでとう
Say it: otanjōbi omedetō
Means: Congratulations on your birthday
お誕生日おめでとうございます
Say it: otanjōbi omedetō gozaimasu
Means: Congratulations on your birthday (polite)
Send this as a card — freeWrite in your language; it arrives in Japanese.