What is 21 degrees c in fahrenheit?

21 degrees Celsius is equal to 69.8 degrees Fahrenheit.

To convert Celsius to Fahrenheit, you can use the formula:
°F = (°C × 9/5) + 32

So, in this case:
°F = (21 × 9/5) + 32
°F = (37.8) + 32
°F = 69.8

Therefore, 21 degrees Celsius is equal to 69.8 degrees Fahrenheit.