Temperature Converter
Convert between Celsius, Fahrenheit, and Kelvin instantly. Choose a conversion pair below, or use the quick converter to get your answer right now.
36°C = 96.8°F36 degrees Celsius is 96.8 degrees Fahrenheit
What Is a Temperature Converter?
A Temperature Converter helps you instantly convert temperature values between Celsius (°C), Fahrenheit (°F), Kelvin (K), Rankine (°R), and Réaumur (°Ré). This free online tool is useful for weather readings, cooking, science experiments, industrial measurements, medical references, and international temperature conversions.
Different countries and industries use different temperature scales. Celsius is commonly used worldwide, Fahrenheit is mainly used in the United States, and Kelvin is the scientific standard used in physics and chemistry.
Our Temperature Converter provides fast, accurate, and easy conversions for everyday and professional use.
How to Convert Temperature Units
Temperature conversion uses mathematical formulas to translate values between different temperature scales. Each scale has a different starting point and interval system.
Celsius to Fahrenheit
°F = (°C × 9/5) + 32
Example: (36 × 9/5) + 32 = 96.8 °F
Fahrenheit to Celsius
°C = (°F − 32) × 5/9
Example: (98.6 − 32) × 5/9 = 37 °C
Celsius to Kelvin
K = °C + 273.15
Example: 100 + 273.15 = 373.15 K
Kelvin to Celsius
°C = K − 273.15
Example: 373.15 − 273.15 = 100 °C
Temperature Conversion Formula Table
| Conversion | Formula |
|---|
| Celsius to Fahrenheit | (°C × 9/5) + 32 |
| Fahrenheit to Celsius | (°F − 32) × 5/9 |
| Celsius to Kelvin | °C + 273.15 |
| Kelvin to Celsius | K − 273.15 |
| Fahrenheit to Kelvin | ((°F − 32) × 5/9) + 273.15 |
| Kelvin to Fahrenheit | ((K − 273.15) × 9/5) + 32 |
| Celsius to Rankine | (°C + 273.15) × 9/5 |
| Rankine to Celsius | (°R − 491.67) × 5/9 |
These formulas are commonly used in weather forecasting, engineering, chemistry, physics, cooking, and industrial systems.
Temperature Reference Table
Key temperatures expressed in all five scales — a quick reference for science, cooking, and everyday life.
| Reference Point | °C | °F | K | °R | °Ré |
|---|
| Absolute Zero | -273.15 | -459.67 | 0 | 0 | -218.52 |
| Freezing Point (Water) | 0 | 32 | 273.15 | 491.67 | 0 |
| Room Temperature | 20 | 68 | 293.15 | 527.67 | 16 |
| Human Body Temp. | 37 | 98.6 | 310.15 | 558.27 | 29.6 |
| Boiling Point (Water) | 100 | 212 | 373.15 | 671.67 | 80 |
| Oven — Low | 150 | 302 | 423.15 | 761.67 | 120 |
| Oven — High | 230 | 446 | 503.15 | 905.67 | 184 |
| Surface of the Sun | 5505 | 9941 | 5778 | 10400 | 4404 |
Understanding the Temperature Scales
Celsius (°C)
Celsius is the most widely used temperature scale globally. Water freezes at 0°C and boils at 100°C under standard atmospheric pressure. Celsius is commonly used for weather forecasts, cooking, education, and everyday measurements.
Fahrenheit (°F)
Fahrenheit is primarily used in the United States and a few territories. Water freezes at 32°F and boils at 212°F. This scale is commonly used for weather reporting and household temperatures.
Kelvin (K)
Kelvin is the scientific temperature scale used in physics, chemistry, and thermodynamics. Kelvin starts at Absolute Zero, the coldest theoretically possible temperature in the universe.
Rankine (°R)
Rankine is an absolute temperature scale mainly used in engineering systems in the United States. It is based on the Fahrenheit degree interval.
Need more than temperature calculations? Explore Unit Converter Pro for length, speed, volume, and 100+ instant tools.
Real-World Uses of Temperature Conversion
Weather Forecasting
Countries use different temperature scales for weather reporting. Temperature conversion helps travelers and international users understand local forecasts accurately.
Cooking & Baking
Recipes often use different temperature systems depending on the country. Converting between Celsius and Fahrenheit is important for accurate oven settings and cooking temperatures.
Science & Engineering
Kelvin is the absolute temperature scale widely used across scientific disciplines:
- Physics & Chemistry
- Thermodynamics
- Engineering systems
- Laboratory calculations
Medical Applications
Body temperature measurements may use Celsius or Fahrenheit depending on the country and medical equipment.
ReferenceNormal human body temperature: 37°C = 98.6°F
Popular Temperature Conversion Pairs
Quick access to the most frequently used temperature conversions.
Why Use Our Temperature Converter?
Our Temperature Converter is designed for fast, accurate, and user-friendly conversions between major temperature scales. Whether you are converting temperatures for science, cooking, travel, engineering, or education, the tool delivers instant results across Celsius, Fahrenheit, Kelvin, Rankine, and Réaumur systems.
Benefits include:
- Instant calculations
- Mobile-friendly design
- Accurate scientific formulas
- Multiple unit support
- Easy-to-use interface
- Free online access
Use our Temperature Converter anytime for reliable and precise temperature calculations.
Frequently Asked Questions
What are the three main temperature scales?
Celsius (°C) is the global everyday standard. Fahrenheit (°F) is used in the United States. Kelvin (K) is the scientific absolute scale used in physics, chemistry, and astronomy. All three are interconvertible using exact formulas.
Which countries still use Fahrenheit?
The United States and its territories (Puerto Rico, Guam, US Virgin Islands, Northern Mariana Islands) use Fahrenheit for everyday weather and cooking. The Bahamas, Cayman Islands, and Palau also use °F unofficially. The rest of the world uses Celsius.
What is the formula to convert Celsius to Fahrenheit?
°F = (°C × 9/5) + 32. For example: 100°C = (100 × 1.8) + 32 = 212°F. To go the other way: °C = (°F − 32) × 5/9.
What is Absolute Zero?
Absolute Zero is the lowest possible temperature in the universe: 0 K = −273.15°C = −459.67°F. At this temperature, all molecular motion stops. It has never been fully achieved in a laboratory but has been approached within billionths of a degree. The closest natural temperature ever measured on Earth was −89.2°C at Vostok Station, Antarctica — read more about the
coldest temperature ever recorded.
At what temperature are Celsius and Fahrenheit equal?
Celsius and Fahrenheit are equal at exactly −40°. At −40°C = −40°F, both scales meet. This is the only temperature where the two scales give the same number. Use our
Celsius to Fahrenheit converter to verify any value.
What is the hottest temperature ever recorded on Earth?
The hottest temperature ever recorded on Earth is 56.7°C (134°F), measured at Furnace Creek in Death Valley, California, USA on July 10, 1913. This is the official record verified by the World Meteorological Organization (WMO).
What is the coldest temperature ever recorded on Earth?
The coldest temperature ever recorded on Earth is −89.2°C (−128.6°F), recorded at Vostok Station, Antarctica on July 21, 1983. The total span between Earth's hottest and coldest official records is an extraordinary 145.9°C (262.6°F).
Is Kelvin the same as Celsius?
The Kelvin and Celsius scales use the same degree size — a difference of 1 K equals a difference of 1°C. The only difference is the starting point: Kelvin starts at Absolute Zero (0 K), while Celsius starts at the freezing point of water (0°C = 273.15 K). Use our
Kelvin to Celsius converter for instant results.
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