# Celsius to Fahrenheit Conversion – °C to °F

LAST UPDATE: October 26th, 2020

## Formula – How to convert Celsius to Fahrenheit

### Formula 1 (Easiest to remember)

(°C x (9÷5)) + 32 = °F

• Step 1: Multiply °C by 9÷5. 9÷5 = 1.8.
• Step 2: Add 32.

#### Example

Find 20°C in Fahrenheit:

• Step 1: Multiply °C by 9÷5: 20°C x (9÷5) = 20°C x 1.8 = 36
• Step 2: Add 32: 36 + 32 = 68°F

### Formula 2 (Quicker)

(°C x 1.8) + 32 = °F

• Step 1: Multiply °C by 1.8.
• Step 2: Add 32.

#### Example:

Find 30°C in Fahrenheit:

• Step 1: Multiply °C by 1.8: 30°C x 1.8 = 54
• Step 2: Add 32: 54 + 32 = 86°F

## What is the difference between Celsius and Fahrenheit?

Celsius and Fahrenheit are two temperature scales.

Celsius is benchmarked from the freezing point of water (0°C) and the boiling point of water (100°C).

Fahrenheit’s origins are not certain, however it is believed that 0°F was the freezing point of equal parts ice, water, and salt. 100°F was about the body temperature of a person. Today, Fahrenheit is benchmarked from the freezing point of water (32°F) and the boiling point of water (212°F).

## Who uses Celsius and Fahrenheit?

Celsius is a “standard unit” and is commonly used worldwide.

Fahrenheit is used in the United States as well as some regions of the Pacific and the Caribbean.

## What are other common temperature scales?

Kelvin and Rankine are the two other temperature scales. They are benchmarked off absolute 0 (the coldest temperature possible).

Kelvin (°K) increases at the same rate as the Celsius scale, but is offset by 273.15° from Celsius. Absolute 0 is -273.15°C, and 0°K.

Rankine (°R) increases at the same rate as the Fahrenheit scale, but is offset by 459.67° from Fahrenheit. Absolute 0 is -459.67°F, and 0°R.