How do I convert Celsius to Fahrenheit?

°F = (°C × 9/5) + 32. Example: 100°C = (100 × 9/5) + 32 = 180 + 32 = 212°F (boiling point of water).

How do I convert Fahrenheit to Celsius?

°C = (°F - 32) × 5/9. Example: 98.6°F (normal body temp) = (98.6 - 32) × 5/9 = 66.6 × 5/9 = 37°C.

What is Kelvin used for?

Kelvin is the SI unit of thermodynamic temperature used in science and engineering. 0 K is absolute zero (−273.15°C), the coldest possible temperature. Kelvin has the same size as Celsius degrees.

What temperature is the same in Celsius and Fahrenheit?

-40°C = -40°F. This is the only temperature where the two scales coincide.

What is normal human body temperature?

37°C (98.6°F). However, "normal" actually ranges from 36.1°C to 37.2°C (97°F to 99°F) depending on the person, time of day, and where the measurement is taken.

ToolsArena

Temperature Converter

Convert temperatures between Celsius, Fahrenheit, and Kelvin instantly.

Celsius (°C)

°C

Fahrenheit (°F)

°F

Kelvin (K)

Conversion Result

0°C

Celsius

32°F

Fahrenheit

273.15 K

Kelvin

Common Reference Temperatures

How to Use Temperature Converter

1
Enter your temperature value in any field (Celsius, Fahrenheit, or Kelvin).
2
The equivalent values in the other two scales update instantly.
3
Reference the common temperature landmarks shown below for context.
4
Use the swap button to reverse the conversion direction.
5
Clear the field to enter a new temperature.

About Temperature Converter

Convert temperatures between Celsius (°C), Fahrenheit (°F), and Kelvin (K) with our instant Temperature Converter. Enter a temperature in any unit and see the equivalent in all three scales simultaneously — no need to convert back and forth manually.

Temperature conversion is needed in weather forecasting (US uses Fahrenheit, most of the world uses Celsius), cooking (recipes from different countries use different scales), scientific work (Kelvin is the SI unit for thermodynamic temperature), and medicine (body temperature, fever thresholds differ by scale).

The converter also shows common temperature reference points (water freezing/boiling, body temperature, oven temperatures) as quick reference anchors for each scale.