Whitney Houston is born on Friday 9th of August 1963, so she becomes 55 years old on Thursday 9th of August 2018. However, during 2018 but before 9th of August, Whitney Houston is still 54 years old. About how she really is in 2018, it depends when in 2018 we're talking about because people's ages change during their birthdays, not really during the beginning of the new year. 2018 Whitney Houston's Age: <Thursday 9th of August 2018 (Before)=54 years old ≥Thursday 9th of August 2018 (During and After)=55 years old If we determine something more specific, we don't have to talk about the dependence. If determine her age through the year, then she's 55 years old in 2018.