Temperature Converter Tool

Temperature Converter Tool | Celsius, Fahrenheit, Kelvin Conversion

🌡️ Temperature Converter Tool

Convert between Celsius, Fahrenheit, Kelvin, Rankine, and Réaumur with ease

Temperature Converter

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Temperature Facts

Interesting Temperature Points:

  • Absolute Zero: -273.15°C, -459.67°F, 0K (theoretical minimum temperature)
  • Freezing Point of Water: 0°C, 32°F, 273.15K
  • Boiling Point of Water: 100°C, 212°F, 373.15K (at sea level)
  • Human Body Temperature: ~37°C, ~98.6°F, ~310.15K
  • Surface of the Sun: ~5,500°C, ~9,932°F, ~5,773K

Conversion Formulas:

  • 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

Temperature Conversion Tables

Celsius Conversion Table

Celsius (°C) Fahrenheit (°F) Kelvin (K) Rankine (°R) Réaumur (°Ré)
-273.15 (Absolute Zero) -459.67 0 0 -218.52
-40 -40 233.15 419.67 -32
0 (Freezing Point) 32 273.15 491.67 0
20 (Room Temp) 68 293.15 527.67 16
37 (Body Temp) 98.6 310.15 558.27 29.6
100 (Boiling Point) 212 373.15 671.67 80

Fahrenheit Conversion Table

Fahrenheit (°F) Celsius (°C) Kelvin (K) Rankine (°R) Réaumur (°Ré)
-459.67 (Absolute Zero) -273.15 0 0 -218.52
-40 -40 233.15 419.67 -32
32 (Freezing Point) 0 273.15 491.67 0
68 (Room Temp) 20 293.15 527.67 16
98.6 (Body Temp) 37 310.15 558.27 29.6
212 (Boiling Point) 100 373.15 671.67 80

Kelvin Conversion Table

Kelvin (K) Celsius (°C) Fahrenheit (°F) Rankine (°R) Réaumur (°Ré)
0 (Absolute Zero) -273.15 -459.67 0 -218.52
233.15 -40 -40 419.67 -32
273.15 (Freezing Point) 0 32 491.67 0
293.15 (Room Temp) 20 68 527.67 16
310.15 (Body Temp) 37 98.6 558.27 29.6
373.15 (Boiling Point) 100 212 671.67 80

Frequently Asked Questions

What is the difference between Celsius and Fahrenheit?

Celsius (°C) and Fahrenheit (°F) are two different temperature scales. The Celsius scale sets the freezing point of water at 0°C and the boiling point at 100°C (at sea level), while the Fahrenheit scale sets these points at 32°F and 212°F respectively. Celsius is used in most countries worldwide, while Fahrenheit is primarily used in the United States.

Why is Kelvin used in scientific measurements?

Kelvin (K) is the base unit of temperature in the International System of Units (SI). It's used in scientific measurements because it's an absolute temperature scale where 0K (absolute zero) represents the theoretical absence of all thermal energy. Unlike Celsius and Fahrenheit, Kelvin doesn't use degrees and is particularly useful in physics and chemistry calculations.

At what temperature are Celsius and Fahrenheit equal?

Celsius and Fahrenheit scales intersect at -40°, meaning -40°C = -40°F. This is the only temperature where both scales show the same numerical value.

What are Rankine and Réaumur scales?

Rankine (°R) is an absolute temperature scale similar to Kelvin but based on Fahrenheit degrees. Absolute zero is 0°R, and the freezing point of water is 491.67°R. Réaumur (°Ré) is an older scale where the freezing point of water is 0°Ré and boiling point is 80°Ré. It was used in parts of Europe but is now largely obsolete.

How do I convert between temperature scales manually?

Here are the basic conversion formulas:

  • 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

User Comments

Leave a Comment

John D.

March 15, 2023

This is the most comprehensive temperature converter I've found online! The conversion tables are especially helpful for my science homework. Thanks!

Sarah M.

February 28, 2023

I love that I can type "100F" directly and it understands what I mean. The sample button is also great for testing how it works.

Dr. Robert Chen

January 10, 2023

As a chemistry professor, I appreciate the inclusion of Kelvin and Rankine scales. Most converters only do Celsius-Fahrenheit. Excellent tool!

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This free online tool provides accurate temperature conversions between Celsius, Fahrenheit, Kelvin, Rankine, and Réaumur scales.