Temperature Converter
Convert Celsius, Fahrenheit, and Kelvin instantly.
Temperature Converter
Convert Celsius, Fahrenheit, and Kelvin with formulas and freezing/boiling reference points.
This calculator auto-updates when values change.
Quick conversions
Conversion logic
The input is converted to the base unit (kelvin), then converted into the selected output unit. This avoids rounding drift when switching between units.
Converted Value
32
F
0 C equals 32 F.
Base value
273.15 kelvin
Multi-unit breakdown
Celsius
0 C
Fahrenheit
32 F
Kelvin
273.15 K
About This Temperature Converter
This temperature converter changes values between Celsius, Fahrenheit, and Kelvin. It is useful for weather, cooking, school science, lab work, engineering checks, and reading measurements from sources that use a different scale.
Unlike length and weight conversions, temperature conversion uses both scale and offset. For example, Celsius and Fahrenheit do not share the same zero point, so the formula must shift the value as well as multiply it.
The converter also shows a breakdown across all supported temperature scales. This makes it easier to compare common reference points, such as freezing water at 0 C, 32 F, and 273.15 K.
How to Use This Calculator
- 1
Enter the temperature
Type the temperature value in the From field.
- 2
Choose the starting scale
Select Celsius, Fahrenheit, or Kelvin as the current scale.
- 3
Choose the output scale
Select the scale you want to convert into and read the highlighted answer.
- 4
Use reference presets
Try presets such as freezing point, boiling point, room temperature, or Fahrenheit to Celsius.
- 5
Check the scale breakdown
Review the Celsius, Fahrenheit, and Kelvin values together to understand how the scales relate.
Frequently Asked Questions
Which temperature scales are supported?v
The converter supports Celsius, Fahrenheit, and Kelvin. Celsius and Fahrenheit are common everyday scales, while Kelvin is the absolute temperature scale used in science.
Why is temperature conversion different from length or weight conversion?v
Temperature scales have different zero points as well as different step sizes. That means conversion needs an offset and a multiplier, not just a simple multiplication factor.
What is absolute zero?v
Absolute zero is 0 K, equal to -273.15 C or -459.67 F. It is the point where Kelvin begins, so Kelvin values should not go below zero in physical temperature contexts.
What are the common formulas?v
C to F uses F = C x 9/5 + 32. F to C uses C = (F - 32) x 5/9. C to K uses K = C + 273.15.
Why do weather forecasts use different scales?v
Most countries use Celsius for weather, while the United States commonly uses Fahrenheit. Scientific work usually uses Kelvin because it starts at absolute zero.