Temperature Converter

Convert between Celsius, Fahrenheit, and Kelvin instantly. Free online temperature converter with accurate calculations, detailed explanations, and useful conversion tables.

Temperature Unit Converter
°C
C Water freezes at 0°C, boils at 100°C
F Water freezes at 32°F, boils at 212°F
K Absolute zero: 0K, water freezes at 273.15K
Convert
°F
C Metric system standard
F Commonly used in USA
K Scientific temperature scale
Conversion Result
25.00
Celsius
°C
77.00
Fahrenheit
°F
(25°C × 9/5) + 32 = 77.00°F
Temperature Scale Comparison
°C
Celsius Scale
  • Metric system standard
  • Water freezes at 0°C
  • Water boils at 100°C
  • Used worldwide (except USA)
  • Named after Anders Celsius
°F
Fahrenheit Scale
  • Imperial system standard
  • Water freezes at 32°F
  • Water boils at 212°F
  • Primarily used in USA
  • Named after Daniel Fahrenheit
K
Kelvin Scale
  • Absolute temperature scale
  • Absolute zero: 0K
  • Water freezes at 273.15K
  • Used in scientific research
  • Named after Lord Kelvin
Common Temperature Conversions
Celsius (°C) Fahrenheit (°F) Kelvin (K) Description
About Temperature Scales

Temperature scales measure thermal energy. Different scales are used in different contexts, from daily weather reports to scientific research.

  • Celsius: Most common worldwide scale
  • Fahrenheit: Used primarily in the USA
  • Kelvin: Absolute scale used in science
  • Different countries use different scales
Conversion Formulas

The conversion between temperature scales follows specific mathematical formulas:

  • °C to °F: (°C × 9/5) + 32
  • °F to °C: (°F - 32) × 5/9
  • °C to K: °C + 273.15
  • K to °C: K - 273.15
  • °F to K: (°F - 32) × 5/9 + 273.15
Practical Applications

Temperature conversion is essential in various fields and daily life situations:

  • Weather forecasting and reporting
  • Scientific experiments and research
  • Cooking and baking recipes
  • Industrial processes and manufacturing
  • Medical temperature measurements