Temperature Unit Converter
A simple yet powerful tool for temperature conversion. Move seamlessly between Celsius, Fahrenheit, and Kelvin scales for cooking, science, or weather.
Convert Temperature
Results
Enter temperature value and select units to convert
Temperature Scale
Common Temperatures
Temperature Conversion Formulas
Celsius to Fahrenheit
°F = (°C × 9/5) + 32
Example: (25 × 9/5) + 32 = 77°F
Fahrenheit to Celsius
°C = (°F - 32) × 5/9
Example: (77 - 32) × 5/9 = 25°C
Celsius to Kelvin
K = °C + 273.15
Example: 25 + 273.15 = 298.15K
Using the Temperature Tool
Enter Value
Type the temperature number you have.
Set Units
Select which scale you are starting from (e.g., Celsius) and which you want (e.g., Fahrenheit).
Result
View your converted temperature instantly.
Understanding Temperature Scales
Temperature measures the thermal energy of matter—essentially, how fast the atoms in an object are vibrating. While there are many scientific ways to measure this, three scales dominate our world: Celsius, Fahrenheit, and Kelvin.
Celsius (°C)
The international standard. Defined by the freezing point of water (0°C) and boiling point (100°C).
Fahrenheit (°F)
The US standard. Water freezes at 32°F and boils at 212°F. It offers more precision for weather temperatures without decimals.
Kelvin (K)
The scientific standard. It starts at "Absolute Zero" (0 K), the theoretical point where all thermal motion stops. It uses the same increment size as Celsius.
Frequently Asked Questions
Is -40 degrees the same in Celsius and Fahrenheit?
Yes! -40°C is equal to -40°F. This is the unique point where the two scales intersect.
Why doesn't Kelvin use a degree symbol (°)?
Kelvin is an absolute scale, not a relative one like Celsius or Fahrenheit. We say "273 Kelvin," not "273 degrees Kelvin."
What is normal body temperature?
Average human body temperature is typically cited as 98.6°F (37°C), although recent studies suggest the modern average might be slightly lower, around 97.9°F.