Celsius to Fahrenheit

What is the formula to convert Celsius to Fahrenheit?

To convert Celsius to Fahrenheit, use the following formula: $$ F = \frac{9}{5}C + 32 $$ where ( F ) is the temperature in Fahrenheit and ( C ) is the temperature in Celsius.

How do you convert 25 degrees Celsius to Fahrenheit?

To convert 25 degrees Celsius to Fahrenheit, apply the conversion formula: $$ F = \frac{9}{5}(25) + 32 = 45 + 32 = 77 $$ So, 25 degrees Celsius is equal to 77 degrees Fahrenheit.

Why do Celsius and Fahrenheit scales differ?

Celsius and Fahrenheit scales differ primarily in their starting points and increments. Celsius is based on the freezing (0°C) and boiling points (100°C) of water under standard atmospheric conditions, divided into 100 equal parts. Fahrenheit, however, sets 32°F as the freezing point of water and 212°F as the boiling point, divided into 180 equal parts.

How can you quickly estimate Celsius to Fahrenheit without a calculator?

A quick estimate for converting Celsius to Fahrenheit can be done by doubling the Celsius temperature and then adding 30. For example, for 20°C: $$ F \approx 2 \times 20 + 30 = 40 + 30 = 70 $$ This method is not exact but gives a close approximation (actual conversion: 68°F).

Is there a temperature where Celsius and Fahrenheit are the same?

Yes, there is one temperature where Celsius and Fahrenheit are equal: -40 degrees. To verify: $$ -40 = \frac{9}{5}(-40) + 32 $$ $$ -40 = -72 + 32 $$ $$ -40 = -40 $$ Thus, -40°C is equal to -40°F.