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Temperature Converter

Convert temperatures between Fahrenheit, Celsius, Kelvin, and Rankine with instant live conversion. Perfect for science, cooking, and weather.

Temperature Converter

Enter a value in any field and click Calculate

Conversion Results

Celsius

20°C

Fahrenheit

68°F

Kelvin

293.15K

Rankine

527.67°R

Comfortable

Ideal room temperature for most people

🌡️ Temperature Scale Guide

Common Scales

Celsius (°C)

Water freezes at 0°C, boils at 100°C

Used worldwide, scientific standard

Fahrenheit (°F)

Water freezes at 32°F, boils at 212°F

Used in United States

Scientific Scales

Kelvin (K)

Absolute scale, 0K = absolute zero

SI unit, used in science

Rankine (°R)

Absolute scale using Fahrenheit degrees

Used in engineering

📊 Quick Reference Points

Common temperature reference points:

Absolute Zero
Coldest possible temperature
-273.15°C
-459.7°F
Liquid Nitrogen
Boiling point of nitrogen
-196°C
-320.8°F
Dry Ice
Sublimation point of CO₂
-78.5°C
-109.3°F
Antarctic Record
Coldest natural temperature on Earth
-89.2°C
-128.6°F
Water Freezes
Freezing point of water
0°C
32.0°F
Room Temperature
Comfortable indoor temperature
20°C
68.0°F
Body Temperature
Normal human body temperature
37°C
98.6°F
Hot Day
Very hot summer day
40°C
104.0°F

🧮 Conversion Formulas

Celsius ↔ Fahrenheit

°F = (°C × 9/5) + 32
°C = (°F - 32) × 5/9

Celsius ↔ Kelvin

K = °C + 273.15
°C = K - 273.15

Fahrenheit ↔ Rankine

°R = °F + 459.67
°F = °R - 459.67

Kelvin ↔ Rankine

°R = K × 9/5
K = °R × 5/9

🔬 Temperature Applications

Scientific Uses

  • 🧪Laboratory experiments and research
  • 🔬Physics and chemistry calculations
  • 🌡️Weather and climate science
  • ⚗️Material science and engineering

Everyday Uses

  • 🍳Cooking and baking recipes
  • 🏠Home heating and cooling
  • 🌍Travel and weather planning
  • 🏥Medical and health monitoring

📚 Temperature Facts

Absolute Zero

-273.15°C (-459.67°F) is the coldest possible temperature

Hottest Recorded

134°F (56.7°C) in Death Valley, California

Human Body

Normal body temperature is 98.6°F (37°C)

Kelvin Scale

Named after Lord Kelvin, no degree symbol used

Frequently Asked Questions

What temperature scales can I convert between?
Our temperature converter supports four major temperature scales: Celsius (°C), Fahrenheit (°F), Kelvin (K), and Rankine (°R). You can enter a value in any scale and instantly see the equivalent temperatures in all other scales.
How accurate are the temperature conversions?
Our temperature conversions are mathematically precise using the standard conversion formulas. Results are rounded to 2 decimal places for practical use. The conversions are based on internationally accepted scientific standards.
What is the difference between Celsius and Fahrenheit?
Celsius (°C) is based on the freezing (0°C) and boiling (100°C) points of water. Fahrenheit (°F) uses 32°F for freezing and 212°F for boiling water. To convert: °F = (°C × 9/5) + 32, and °C = (°F - 32) × 5/9.
When would I use Kelvin or Rankine scales?
Kelvin is the SI unit for temperature, widely used in science. It starts at absolute zero (0K = -273.15°C). Rankine is similar to Kelvin but uses Fahrenheit-sized degrees. Both are absolute temperature scales used in scientific and engineering applications.
Can I bookmark specific temperature conversions?
Yes! Our converter supports URL parameters, so you can share or bookmark specific conversions. For example, add ?celsius=20 to the URL to automatically show 20°C converted to all other scales.

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Temperature Converter - Fahrenheit, Celsius, Kelvin & Rankine