Temperature Conversion Reference
Convert values across Celsius (°C), Fahrenheit (°F), Kelvin (K), Rankine (°R), Réaumur (°Ré), Rømer (°Rø), Newton (°N), and Delisle (°De) with live exact calculations.
Temperature Converter
Comprehensive Temperature Scale Guide & Conversion Formulas
Temperature measurement measures the average kinetic energy of atoms or molecules within a substance. Across scientific research, culinary arts, meteorology, space exploration, and medical diagnostics, various temperature scales have been established throughout history. The standard international unit for absolute thermodynamic temperature is the Kelvin (K), while Celsius (°C) and Fahrenheit (°F) remain the most widely utilized scales in daily civilian and commercial life.
Exact Mathematical Temperature Formulas
- Fahrenheit to Celsius: °C = (°F − 32) × 5/9
- Celsius to Fahrenheit: °F = (°C × 9/5) + 32
- Celsius to Kelvin: K = °C + 273.15
- Fahrenheit to Kelvin: K = (°F − 32) × 5/9 + 273.15
- Celsius to Rankine: °R = (°C + 273.15) × 9/5
Common Temperature Reference Comparison Table
| Thermal Milestone | Celsius (°C) | Fahrenheit (°F) | Kelvin (K) |
|---|---|---|---|
| Absolute Zero | -273.15 °C | -459.67 °F | 0 K |
| Water Freezing Point | 0 °C | 32 °F | 273.15 K |
| Average Room Temperature | 20 °C to 22 °C | 68 °F to 71.6 °F | 293.15 K |
| Human Body Temperature | 37 °C | 98.6 °F | 310.15 K |
| Water Boiling Point (Sea Level) | 100 °C | 212 °F | 373.15 K |
Frequently Asked Questions (FAQs)
Q: Why do the US and UK use different temperature scales?
A: The Fahrenheit scale was developed in 1724 by Daniel Gabriel Fahrenheit. While most countries adopted the metric Celsius scale during the 20th century, the United States retained Fahrenheit for weather forecasts and everyday temperature measurements.
Q: What is absolute zero?
A: Absolute zero (0 Kelvin or -273.15 °C) is the theoretical lower limit of thermodynamic temperature where molecular motion reaches minimum energy state.
Related Guides: 10°C to Fahrenheit 100°F to Celsius