How to say Happy Birthday in Hindi
Both are common. The second is the warmer, more formal wish you would write rather than say.
जन्मदिन मुबारक हो
Say it: janmdin mubaarak ho
Means: May your birthday be blessed
जन्मदिन की हार्दिक शुभकामनाएं
Say it: janmdin kee haardik shubhkaamnaen
Means: Heartfelt birthday wishes
Send this as a card — freeWrite in your language; it arrives in Hindi.