How to Convert Fahrenheit to Celsius

Every now and then, we find ourselves needing to convert Fahrenheit (°F) to Celsius (°C) or vice versa. It can be due to geographical location, scientific endeavors, or even day-to-day weather forecasts. This blog is here to help! At the core of these conversions lies the Fahrenheit to Celsius formula and the Celsius to Fahrenheit formula. Let’s dive in and understand these in detail, and how you can convert temperatures even without a calculator!

Converting Fahrenheit To Celsius

What is the Formula of Fahrenheit to Celsius Conversion: Examples in Detail

Converting Fahrenheit to Celsius can be done using the formula for Fahrenheit to Celsius as follows:

Formula to Convert Fahrenheit to Celsius

°C = (°F - 32) x 5/9

Example: Convert body temperature of 98.6 °F to °C.
°C = (98.6-32) x 5/9
°C = (66.6) x 5/9
°C = 66.6 x 5÷9
°C = 37

Let’s illustrate this with some examples to Convert Fahrenheit to Celsius:

  1. For 32°F: (32 – 32) x 5/9 = 0°C
  2. For 68°F: (68 – 32) x 5/9 = 20°C
  3. For 100°F: (100 – 32) x 5/9 = 37.78°C
  4. For 212°F: (212 – 32) x 5/9 = 100°C
  5. For 300°F: (300 – 32) x 5/9 = 149°C

Detailed Conversion Table: Fahrenheit to Celsius

Sometimes, a table comes handy when attempting to convert Fahrenheit to Celsius. Here’s a detailed conversion table for your convenience:

Fahrenheit (°F) Celsius (°C)
32 0
68 20
100 37.78
212 100
250 121.11
300 149
Fahrenheit to Celsius Conversion Table

Calculating Temperatures

Fahrenheit and Celsius are units of measure for temperature. The formula for Celsius to Fahrenheit is as follows:

°F = (°C * 9/5) + 32

To answer the question – What is 70 degrees in Celsius? Here’s how we can calculate:

°C = (70 - 32) * 5/9 = 21.11°C

Converting F to C without a Calculator

When you wonder about how to convert F to C without a calculator, you can use a quick-and-dirty approximation:

°C ≈ (°F - 30) / 2 

However, this is an estimate and isn’t accurate for all temperatures, but it’ll give you a rough estimate.

How do you convert Fahrenheit to Celsius?

Follow these steps to convert temperature from degrees Fahrenheit to degrees Celsius:

Step 1: Begin by subtracting 32 from the given Fahrenheit temperature.

Step 2: Next, multiply the difference obtained in Step 1 by 5.

Step 3: Lastly, divide the product value from Step 2 by 9.

This will give you the temperature in degrees Celsius

What is the easiest way to convert Celsius to Fahrenheit?

The easiest way to convert Celsius to Fahrenheit is to use this formula:

F = C * 9/5 + 32

In which F is the temperature in Fahrenheit and C is the temperature in Celsius.

How do you convert F to C without a calculator?

If you don’t have a calculator handy, a rough estimate from Fahrenheit to Celsius can be done with this method:

  1. Subtract 30 from the Fahrenheit temperature.
  2. Divide the result by 2.

This won’t give you a perfect conversion, but it can help you get close to the right answer.

Keep in mind that this method is less accurate the further away from 70°F (21°C) you get.

What is the formula between Celsius and Fahrenheit?

We have two formulas for converting temperatures between Fahrenheit and Celsius:

From Fahrenheit to Celsius:

C = (F – 32) * 5/9

From Celsius to Fahrenheit:

F = C * 9/5 + 32

Again, C and F represent temperature in Celsius and Fahrenheit respectively.

How do you convert Farad to Celsius?

The formula to convert Fahrenheit to Celsius is given by C = 5/9(F-32). Interesting to note, Fahrenheit and Celsius measurements intersect at -40°. Under everyday circumstances, figures in Fahrenheit are typically higher than their Celsius counterparts. For instance, normal body temperature is indicated as 98.6 °F or alternatively 37 °C.

Formula to Convert Fahrenheit to Celsius

The formula to convert Fahrenheit (F) to Celsius (C) is given by C = (F – 32) * 5/91.

Relationship Between Farad and Coulomb

A farad (F) and a coulomb (C) are both units used in the field of physics, specifically in studies of electromagnetism. However, they measure different things.

1 Farad (F) is not equal to 1 Coulomb (C) directly, because they quantify different aspects of electric charge and capacitance.

Conversion of Farad

On the other hand, 1 farad (F) can be defined as the capacitance of a capacitor across which, when charged with 1 coulomb (C), there is a potential difference of 1 volt (V). So it can be expressed as 1F = 1C/V^2


Understanding how to convert Fahrenheit to Celsius and vice versa is straightforward once you grasp the basic formulas. It can help to make international travel, science experiments, or simply interpreting the weather forecast a lot smoother.