Temperature Converter

Convert between Celsius, Fahrenheit, Kelvin, and Rankine with instant analysis and comparison charts.

Methodology, assumptions, and limitations

Temperature scales require an affine conversion: the zero point is shifted and the interval size is scaled. Kelvin is converted without treating it as an ordinary multiplicative unit.

Assumptions
  • The entered value represents temperature, not temperature difference.
  • Scale symbols identify the intended unit.
  • Results are rounded only for display.
Limitations
  • Values below absolute zero are physically invalid.
  • Temperature differences use different conversion rules from absolute temperatures.
  • Instrument accuracy is not improved by displaying more decimals.

Sources and standards

Related calculators

Calculator
Enter your values
Results
0 Celsius (deg C) =
32
Fahrenheit (deg F)
Base Unit Equivalent
0
Base unit: Celsius
Target Unit Context
reading weather and household temperatures in the United States.
Conversion Analysis
Interpret the result and compare it across supported units

Result Summary

0 deg C equals 32 deg F. The same amount is 0 in the base unit.

Unit Context

Celsius are commonly used when using the standard everyday temperature scale in most countries. Fahrenheit are useful when reading weather and household temperatures in the united states.

Practical Comparison

Switching units does not change the underlying quantity. This analysis and the charts show how the same value scales across larger and smaller units so you can choose the most readable format.

How to Use

Step-by-step instructions
  1. 1Enter the temperature value.
  2. 2Choose the source scale.
  3. 3Choose the target scale.
  4. 4Review the analysis and charts to compare the same thermal state across all supported temperature units.

Temperature Conversion Formula

Temperature scales are not simple proportional units, so the converter normalizes to Celsius and applies the correct offsets.
deg F = (deg C x 9/5) + 32

Variables:

deg CCelsius
deg FFahrenheit

Example

Celsius to Fahrenheit

Inputs:

Value:0
From:Celsius
To:Fahrenheit

Steps:

  1. 1.Multiply Celsius by 9/5.
  2. 2.Add 32 to get Fahrenheit.
Result:
0 deg C = 32 deg F

Frequently Asked Questions

What is absolute zero?

Absolute zero is 0 K, which equals -273.15 deg C and -459.67 deg F.