Temperature Converter (Celsius ↔ Fahrenheit)
Instant high-precision conversion between Celsius and Fahrenheit. Includes thermal reference points for science, cooking, and meteorology.
About
Temperature conversion is a daily necessity in fields ranging from culinary arts to international logistics. While the United States relies on Fahrenheit, the scientific community and the rest of the world utilize Celsius. Misinterpretation of these scales leads to ruined recipes, failed experiments, or improper storage of sensitive goods.
This tool provides bidirectional accuracy. Unlike basic approximations, it accounts for the precise scalar offset and ratio difference between the two systems. It is designed for speed and clarity, offering immediate visual feedback and a comprehensive reference table for context.
Formulas
The conversion between these scales involves both a scaling factor and an offset adjustment due to the differing zero points (freezing point of water).
Celsius to Fahrenheit:
T(°F) = T(°C) × 1.8 + 32
Fahrenheit to Celsius:
T(°C) = T(°F) − 321.8
The factor 1.8 is derived from the fraction 95.
Reference Data
| Condition / Object | Celsius (°C) | Fahrenheit (°F) | Notes |
|---|---|---|---|
| Absolute Zero | -273.15 | -459.67 | Theoretical limit |
| Dry Ice Sublimation | -78.5 | -109.3 | Solid CO2 |
| Mercury Freezes | -38.8 | -37.9 | Thermometer limit |
| Water Freezes | 0 | 32 | Standard pressure |
| Room Temperature | 20 - 22 | 68 - 72 | Comfort zone |
| Human Body Temp | 37 | 98.6 | Average |
| High Fever | 40 | 104 | Medical concern |
| Water Boils | 100 | 212 | Sea level |
| Maillard Reaction | 140 - 165 | 284 - 329 | Browning of food |
| Paper Burns | 233 | 451 | Autoignition |
| Gold Melts | 1,064 | 1,947 | Industrial |
| Sun Surface | 5,505 | 9,941 | Photosphere |