snippetjavascriptTip

Convert between Celsius and Fahrenheit in JavaScript

Submitted by: @import:30-seconds-of-code·Mar 2, 2026·

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javascriptandbetweenconvertcelsiusfahrenheit

Problem

In order to convert from Celsius to Fahrenheit, you can use the conversion formula F = 1.8 * C + 32.
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Conversely, the conversion formula from Fahrenheit to Celsius is C = (F - 32) * 5 / 9.
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Solution

F = 1.8 \times C + 32

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Conversely, the conversion formula from Fahrenheit to Celsius is C = (F - 32) * 5 / 9.
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</latex-expression>

Code Snippets

F = 1.8 \times C + 32

const celsiusToFahrenheit = degrees => 1.8 * degrees + 32;

celsiusToFahrenheit(33); // 91.4

C = (F - 32) \times \frac{5}{9}

Context

From 30-seconds-of-code: convert-celsius-fahrenheit

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