5-Minute Crafts

How to Convert Celsius to Fahrenheit


Some countries use the Celsius temperature scale and others still use the Fahrenheit scale. This sometimes leads to situations when one needs to be converted to the other.

For cases like this, 5-Minute Crafts offers some ways to help you convert Celsius to Fahrenheit, and vice versa.

The difference between Fahrenheit and Celsius

The Fahrenheit temperature scale was the first scale in the world. To measure the temperature, it uses Fahrenheit degrees (°F). Zero on the scale was established as the freezing temperature of a solution of brine made from a mixture of water, ice, and ammonium chloride (a salt). So, water freezes at +32°F and boils at +212°F.

Later, the Celsius scale appeared. It uses Celsius degrees (°C). It is based on 0°C for the freezing point of water and 100°C for the boiling point of water.

So, 0°F = −17°C. And 0°C = 32°F.

How to convert Celsius to Fahrenheit

If you take the number of degrees Celsius, multiply the number by 1.8 and add 32, you will get the number of Fahrenheit degrees. There’s a simpler way to calculate: multiply the Celsius degrees by 2 and add 30. The result will not be exact, but close enough if you don’t need perfect accuracy.

Example. To find out what 20°C is in Fahrenheit, we use the formula and we get this: 20°C × 1.8 + 32 = 68°F.

Let’s try the simple way: 20°C × 2 + 30 = 70°F. The difference is 2 degrees which may not be important if it’s about the weather temperature, but if you need very accurate results, use the original formula or an online calculator.

How to convert Fahrenheit to Celsius

If you subtract 32 from the Fahrenheit degrees and then divide the result by 1.8, you will get the Celsius degrees. The simpler way to do it is: subtract 30 from the number of Fahrenheit degrees and divide the result by 2.

Example. We need to convert 80°F to Celsius degrees: (80°F — 32) / 1.8 = 26°C.

Let’s try the simple method: (80°F — 30) / 2 = 25°C. If you need very accurate results, use the original formula or an online calculator.

Bonus: Celsius to Fahrenheit conversion table

Sometimes, we just don’t have enough time to convert the temperatures, especially when we are cooking. In this case, a table like this is a great tool. Save it to your smartphone or print it out and put it on the fridge door so it’s always there when you need it.

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