Celsius to Fahrenheit Calculator

Quick and accurate temperature conversion between Celsius and Fahrenheit

Temperature Conversion Formula

To convert Celsius to Fahrenheit:

Fahrenheit = ( Celsius × 9/5 ) + 32

Common Temperature References

Description Celsius (°C) Fahrenheit (°F)
Water Freezing 0°C 32°F
Room Temperature 20°C 68°F
Body Temperature 37°C 98.6°F
Water Boiling 100°C 212°F
Absolute Zero -273.15°C -459.67°F
Sun Surface 5505°C 9941°F
Lightning 30000°C 54000°F
Volcano 700°C 1292°F

Understanding Temperature Scales: Celsius, Fahrenheit, and Kelvin

Temperature scales allow us to measure and compare heat levels in our environment. While most countries use Celsius (°C), the United States primarily uses Fahrenheit (°F). Kelvin (K) is the standard unit used in scientific research. Understanding these scales and how to convert between them is essential for:

  • International travel
  • Scientific research
  • Cooking and baking
  • Weather interpretation
  • Medical purposes
  • Industrial applications

Simple Temperature Conversion Formula

Converting between Celsius, Fahrenheit, and Kelvin is straightforward:

Celsius to Fahrenheit: °F = (°C × 9/5) + 32

Fahrenheit to Celsius: °C = (°F - 32) × 5/9

Celsius to Kelvin: K = °C + 273.15

Kelvin to Celsius: °C = K - 273.15

Fahrenheit to Kelvin: K = (°F + 459.67) × 5/9

Kelvin to Fahrenheit: °F = (K × 9/5) - 459.67

Quick Mental Conversion Tips

Need to convert temperatures quickly without a calculator? Here are some helpful shortcuts:

  • Double and 30 Rule: Double the Celsius temperature and add 30 (instead of 32). This gives a close approximation.
  • Key Temperature Anchors: 0°C is 32°F (freezing point), 20°C is 68°F (room temperature), 37°C is 98.6°F (human body temperature), 100°C is 212°F (water boiling point).
  • Kelvin Conversion: To quickly estimate Kelvin from Celsius, add 273.15. For Fahrenheit to Kelvin, use the formula K = (°F + 459.67) × 5/9. For quick approximations, you can just add 273 to the Celsius value.

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