Celsius to Fahrenheit: The Formula, Mental-Math Shortcut, and Full Conversion Table
The Celsius to Fahrenheit formula is simple once you know it. Here is the exact math, a quick mental shortcut, and a full reference table.
Unit Converters Formula • Published on July 30, 2026 • Last updated July 30, 2026
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Temperature in degrees Celsius
Temperature in degrees Fahrenheit
To convert a temperature reading from Celsius (°C) to Fahrenheit (°F), multiply the Celsius value by 9/5 (or 1.8) and then add 32 to account for the freezing point baseline difference.
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The Celsius to Fahrenheit formula is simple once you know it. Here is the exact math, a quick mental shortcut, and a full reference table.
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