This free conversion calculator will convert Celsius to Fahrenheit, i.e. °C to °F. Correct conversion between different measurement scales.

The formula is $T_{\text{°F}} = 1.8 T_{\text{°C}} + 32$, where $T_{\text{°C}} = 15$.

Therefore, $T_{\text{°F}} = 59$.

Answer: $15 \text{°C} = 59 \text{°F}$.