What is the formula for Celsius to Fahrenheit?

F = (C x 9/5) + 32. For example, 100C = (100 x 1.8) + 32 = 212F.

What is the formula for Fahrenheit to Celsius?

C = (F - 32) x 5/9. For example, 72F = (72 - 32) x 5/9 = 22.22C.

What is absolute zero?

Absolute zero is the lowest possible temperature: 0 K = -273.15C = -459.67F. At this temperature, molecular motion effectively stops.

When do Celsius and Fahrenheit equal each other?

At -40 degrees: -40C = -40F. This is the only point where both scales intersect.

Temperature Converter

Convert between Celsius, Fahrenheit, Kelvin, and Rankine. Free temperature converter with formulas.

temperature convertercelsius to fahrenheitfahrenheit to celsiuskelvin converter

Common Use Cases

switching between common measurement systems
cross-checking units for school, work, or travel
avoiding manual conversion mistakes

What is Temperature Converter?

The Temperature Converter uses formula-based conversion (not simple multiplication) to accurately convert between Celsius, Fahrenheit, Kelvin, and Rankine scales. Unlike other unit converters that use multiplication factors, temperature conversion requires specific formulas because the scales have different zero points and degree sizes.

How to Use This Tool

1Select the source and target temperature scales
2Enter the temperature value
3See the converted result with the formula used

Example

Input

100 Celsius

Output

212 Fahrenheit

Before You Rely on This Result

UtilityNest keeps this tool simple on purpose: the goal is to make the task easy to understand, fast to complete, and straightforward to double-check.

Review the inputs once more before you copy, save, or share the result.
Use the example and FAQ on this page to sense-check how the tool behaves.
When the result matters, compare one more scenario or related tool before acting on it.

Frequently Asked Questions

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