TheQuickCalcs

Temperature Converter

Convert between Celsius, Fahrenheit, and Kelvin instantly. See the conversion formula and common temperatures.

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212.00

100°C = 212.00°F

Conversion Formula

F = C x 9/5 + 32

Common Temperature Reference Points

DescriptionCelsiusFahrenheitKelvin
Absolute Zero-273.15°C-459.67°F0 K
Water Freezing Point0°C32°F273.15 K
Room Temperature20°C68°F293.15 K
Body Temperature37°C98.6°F310.15 K
Water Boiling Point100°C212°F373.15 K
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How to Use the Temperature Converter

Enter a temperature value in the input field, then select the unit you are converting from and the unit you want to convert to. The result updates instantly as you type. The converter supports three temperature scales: Celsius, Fahrenheit, and Kelvin.

Below the converter you will find the conversion formula used for your specific conversion, so you can understand and verify the math. The reference points table shows key temperatures in all three scales, providing a quick lookup for common values like water freezing and boiling points, room temperature, and body temperature.

Whether you are a student studying thermodynamics, a cook converting recipe temperatures between metric and imperial, or a traveler trying to understand a weather forecast in a different country, this tool gives you instant, accurate temperature conversions with full transparency into the formulas used.

Frequently Asked Questions

What is the formula to convert Celsius to Fahrenheit?

To convert Celsius to Fahrenheit, multiply the Celsius temperature by 9/5 (or 1.8) and add 32. The formula is: F = C x 9/5 + 32.

What is absolute zero?

Absolute zero is the lowest possible temperature, where all molecular motion ceases. It is 0 Kelvin, -273.15 degrees Celsius, or -459.67 degrees Fahrenheit.

When are Celsius and Fahrenheit equal?

Celsius and Fahrenheit are equal at -40 degrees. That is, -40 C = -40 F. This is the only point where the two scales intersect.

Why is the Kelvin scale used in science?

The Kelvin scale starts at absolute zero and has no negative values, making it ideal for scientific calculations involving thermodynamics, gas laws, and other physical equations where ratios and proportions are important.

What is normal human body temperature?

Normal human body temperature is approximately 37 degrees Celsius (98.6 degrees Fahrenheit or 310.15 Kelvin), though it can vary slightly from person to person.

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