Converting temperatures between Celsius and Fahrenheit is a common mathematical task. To convert a temperature in Celsius to Fahrenheit, we can use the following formula:

°F = (°C × 9/5) + 32

Where °C represents the temperature in Celsius, and °F represents the temperature in Fahrenheit.

## What is 18 degrees Celsius in Fahrenheit?

Now, let’s use this formula to convert 18 degrees Celsius to Fahrenheit:

**Step 1**

Substitute the given temperature in Celsius into the formula.

°F = (18 × 9/5) + 32

**Step 2**

Simplify the expression inside the parentheses.

°F = (162/5) + 32

**Step 3**

Convert the fraction to a decimal.

°F = 32.4 + 32

**Step 4**

Add the two numbers.

°F = 64.4

Therefore, **18 degrees Celsius is equivalent to 64.4 degrees Fahrenheit.**

## Conclusion

To recap, to convert a temperature from Celsius to Fahrenheit, we use the formula °F = (°C × 9/5) + 32. We substituted the given temperature of 18 degrees Celsius into the formula, simplified the expression, converted the fraction to a decimal, and added the two resulting numbers. The final answer is 64.4 degrees Fahrenheit.