Conversion · Difference · Thermal Expansion
Complete guide to temperature scale conversions, absolute vs relative temperature, and thermal expansion.
Celsius equals (Fahrenheit − 32) × 5/9. For example, 212°F converts to 100°C (boiling point of water) and 32°F converts to 0°C (freezing point). This conversion is essential for working with international engineering standards and equipment specifications.
Both Kelvin and Rankine are absolute temperature scales starting at absolute zero. Kelvin uses Celsius-sized degrees (K = °C + 273.15) and is the SI standard, while Rankine uses Fahrenheit-sized degrees (°R = °F + 459.67) and is used in US gas law calculations.
Gas law equations (PV = ZnRT) require absolute temperatures because gas volume and pressure relationships are proportional to absolute temperature, not arbitrary scales. Using Fahrenheit or Celsius directly in these equations would produce incorrect results.
A temperature difference of 1°C equals 1.8°F (or 1°F difference = 0.556°C). This is different from converting a temperature point because the 32° offset cancels out in difference calculations. This distinction is critical for heat transfer and thermal expansion calculations.