Temperature Converter: Fahrenheit, Celsius & Kelvin

Easily convert between Fahrenheit, Celsius, and Kelvin using the inbuilt tool below

All About the Temperature Scales

Celsius (°C)

Celsius, or Centigrade, is based on water’s freezing point (0 °C) and boiling point (100 °C) at sea level. It’s used around the globe in weather, science, and daily life. Absolute zero is −273.15 °C.

Fahrenheit (°F)

Fahrenheit is mainly used in the United States. Water freezes at 32 °F and boils at 212 °F. Absolute zero is −459.67 °F.

Kelvin (K)

Kelvin is the SI temperature scale used in scientific practice. It has an origin at absolute zero (0 K) and does not involve the use of a degree symbol. Water freezes at 273.15 K and evaporates at 373.15 K.

Conversion Formulas and Examples

Fahrenheit to Celsius (°F → °C)

Formula:

°C = (°F − 32) ÷ 1.8

Steps to Convert:

  1. Subtract 32 from the Fahrenheit value
  2. Divide the result by 1.8

Example: Convert 86 °F:

°C = (86 − 32) ÷ 1.8 = 54 ÷ 1.8 = 30

Result: 86 °F = 30 °C

Celsius to Fahrenheit (°C → °F)

Formula:

°F = (°C × 1.8) + 32

Steps to Convert:

  1. Multiply the Celsius value by 1.8
  2. Add 32

Example: Convert 20 °C:

°F = (20 × 1.8) + 32 = 68

Result: 20 °C = 68 °F

Celsius to Kelvin (°C → K)

Formula:

K = °C + 273.15

Steps to Convert:

  1. Add 273.15 to the Celsius value

Example:

25 °C + 273.15 = 298.15 K

Kelvin to Celsius (K → °C)

Formula:

°C = K − 273.15

Steps to Convert:

  1. Subtract 273.15 from the Kelvin value

Example:

300 K − 273.15 = 26.85 °C

Fahrenheit to Kelvin (°F → K)

Formula:

K = ((°F − 32) ÷ 1.8) + 273.15

Steps to Convert:

  1. Subtract 32 from the Fahrenheit value
  2. Divide by 1.8
  3. Add 273.15

Example:

K = ((98.6 − 32) ÷ 1.8) + 273.15 = 310.15 K

Kelvin to Fahrenheit (K → °F)

Formula:

°F = ((K − 273.15) × 1.8) + 32

Steps to Convert:

  1. Subtract 273.15 from the Kelvin value
  2. Multiply by 1.8
  3. Add 32

Example:

°F = ((300 − 273.15) × 1.8) + 32 = 80.33 °F