Temperature Converters | Celsius, Fahrenheit & Kelvin Hub
Welcome to ConverterHub’s complete Temperature Converters directory. Convert seamlessly across thermodynamic, scientific, weather, and culinary temperature scales—including Celsius (°C), Fahrenheit (°F), and Kelvin (K)—with verified physical formulas, instant interactive calculators, and authoritative reference tables.
All Temperature Conversion Tools
Select any converter below for instant calculations, formula explanations, and comprehensive reference tables:
Everyday & Weather Scales
Scientific & Cryogenic Scales
Understanding Temperature: The Physics of Thermal Energy
Temperature quantifies the average kinetic energy of constituent particles within matter. In the International System of Units (SI), the fundamental unit of thermodynamic temperature is the Kelvin (K). Unlike Celsius and Fahrenheit, the Kelvin scale is an absolute thermodynamic scale whose zero point (0 K) represents Absolute Zero—the hypothetical state where classical molecular motion ceases entirely.
- Celsius (°C): Defined by setting 0°C at water’s freezing point and 100°C at water’s boiling point at 1 atmosphere of pressure. Exactly equal to Kelvin shifted by 273.15 ($K = °C + 273.15$).
- Fahrenheit (°F): Primary customary scale used in the United States. Sets water freezing at 32°F and water boiling at 212°F, spanning 180 equal intervals.
- Kelvin (K): The SI base unit. Does not use degree symbols or negative values ($0text{ K} = -273.15°text{C} = -459.67°text{F}$).
Key Thermodynamic Benchmarks
| Thermal State / Benchmark | Kelvin (K) | Celsius (°C) | Fahrenheit (°F) |
|---|---|---|---|
| Absolute Zero | 0 K | -273.15°C | -459.67°F |
| Liquid Nitrogen Boiling Point | 77.36 K | -195.79°C | -320.42°F |
| Dry Ice Sublimation Point | 194.65 K | -78.5°C | -109.3°F |
| Crossover Point of °C and °F | 233.15 K | -40.0°C | -40.0°F |
| Freezing Point of Pure Water | 273.15 K | 0.0°C | 32.0°F |
| Standard Room Temperature | 293.15 K | 20.0°C | 68.0°F |
| Human Body Temperature | 310.15 K | 37.0°C | 98.6°F |
| Boiling Point of Pure Water | 373.15 K | 100.0°C | 212.0°F |
| Standard Baking Oven Temperature | 453.15 K | 180.0°C | 356.0°F |
Quick Formula Reference
- °C to °F:
°F = (°C × 1.8) + 32 - °F to °C:
°C = (°F - 32) / 1.8 - °C to K:
K = °C + 273.15 - K to °C:
°C = K - 273.15 - °F to K:
K = (°F - 32) × 5/9 + 273.15 - K to °F:
°F = (K - 273.15) × 1.8 + 32