Free, high-precision temperature converter to instantly convert Celsius (°C) to Fahrenheit (°F), Fahrenheit (°F) to Celsius (°C), Kelvin (K), Rankine (°Ra), and Réaumur (°Re). Built for fast, accurate temperature conversions, this online calculator is trusted by students, engineers, and professionals for scientific, academic, and industrial use.
The kovertiz universal converter is the definitive solution for cross-platform thermal data. From cryogenic research at Absolute Zero to high-velocity aerospace heat flux in Rankine, our engine provides millisecond data normalization across all global measurement standards.
Privacy & Performance: Built with high-performance JavaScript, our tool processes all thermodynamic calculations client-side. This ensures zero latency and total data privacy for sensitive industrial projects.
High-precision reference points for scientific and industrial use.
Cryogenic Standards
-195.79°C = 77.36 K = -320.42°F
Aerospace Rankine Scale
59°F (Standard) = 518.67°Ra
Réaumur Dairy Industry
32°Re (Coagulation) = 40°C
(F - 32) / 1.8
(C + 273.15) × 1.8
C × 0.8
kovertiz engine: All calculations are executed with double-precision IEEE-754 standards for professional accuracy.
Comparative analysis of thermodynamic benchmarks. This table serves as a professional reference for kovertiz users in scientific, engineering, and culinary fields.
| Key Benchmark | Celsius (°C) | Fahrenheit (°F) | Kelvin (K) | Rankine (°Ra) | Réaumur (°Re) |
|---|---|---|---|---|---|
| Absolute Zero | -273.15 | -459.67 | 0 | 0 | -218.52 |
| Liquid Nitrogen | -195.79 | -320.42 | 77.36 | 139.25 | -156.63 |
| Water Freezes | 0 | 32 | 273.15 | 491.67 | 0 |
| Room Temp (Avg) | 21 | 69.8 | 294.15 | 529.47 | 16.8 |
| Human Body | 37 | 98.6 | 310.15 | 558.27 | 29.6 |
| Water Boils | 100 | 212 | 373.15 | 671.67 | 80 |
| Surface of Sun | 5,505 | 9,941 | 5,778 | 10,401 | 4,404 |
Scientific Note: The values above are calculated at 1 standard atmosphere (101.325 kPa). Absolute Zero is the theoretical limit of the Kelvin and Rankine scales, where molecular entropy is minimized. kovertiz.com uses the constant $273.15$ for precise Celsius-Kelvin translations.
Everything you need to know about thermal dynamics and unit conversion on kovertiz.com.
While water boils at 100°C (212°F) at sea level, the boiling point drops by approximately 1°C for every 300 meters of altitude. This occurs because lower atmospheric pressure requires less heat to turn water into vapor.
The triple point is the unique temperature and pressure at which water exists simultaneously in solid, liquid, and gaseous states. This occurs at exactly 0.01°C (273.16 K) and is a fundamental constant for calibrating scientific sensors.
Unlike Celsius or Fahrenheit, Kelvin is an absolute scale. It starts at Absolute Zero (0K), the point where all molecular motion ceases. This makes it essential for physics equations where negative numbers would break thermodynamic laws.
The mathematical intersection occurs at -40 degrees. This is the only temperature where -40°C is exactly equal to -40°F. Our converter applies the linear equation $F = (C \times 1.8) + 32$ to verify this point.
Rankine (°Ra) is the absolute scale for the Imperial system (Fahrenheit + 459.67), widely used in US aerospace. Réaumur (°Re) is a historical scale (0 to 80 degrees) still used today in specific European artisanal cheese-making processes.
We use high-precision IEEE 754 floating-point arithmetic. This ensures that every conversion—from daily weather to complex cryogenic calculations—is accurate to more than 10 decimal places, meeting international engineering standards.