What is 21 celsius in fahrenheit?

To convert Celsius to Fahrenheit, you can use the formula:

°F = (°C × 9/5) + 32

So, for 21 degrees Celsius:

°F = (21 × 9/5) + 32 °F = (189/5) + 32 °F = 37.8 + 32 °F = 69.8

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