Temperature Conversion Formulas
Complete formulas for converting between Celsius, Fahrenheit, Kelvin, and Rankine temperature scales with detailed examples.
🌡️ Temperature Scale Overview
Celsius (°C)
Freezing: 0°C
Boiling: 100°C
Absolute Zero: -273.15°C
Metric/Scientific
Fahrenheit (°F)
Freezing: 32°F
Boiling: 212°F
Absolute Zero: -459.67°F
US Standard
Kelvin (K)
Freezing: 273.15 K
Boiling: 373.15 K
Absolute Zero: 0 K
Absolute Scale
Rankine (°R)
Freezing: 491.67°R
Boiling: 671.67°R
Absolute Zero: 0°R
Fahrenheit Absolute
🔄 Primary Conversion Formulas
Celsius ↔ Fahrenheit
Celsius to Fahrenheit
Example: 25°C to °F
Fahrenheit to Celsius
Example: 77°F to °C
Celsius ↔ Kelvin
Celsius to Kelvin
Example: 25°C to K
Kelvin to Celsius
Example: 298.15 K to °C
⚡ Advanced Conversions
Fahrenheit ↔ Kelvin
Fahrenheit to Kelvin
Example: 77°F to K
Kelvin to Fahrenheit
Example: 298.15 K to °F
Rankine Conversions
Fahrenheit to Rankine
Example: 77°F to °R
Kelvin to Rankine
Example: 298.15 K to °R
📊 Temperature Conversion Table
| Description | Celsius (°C) | Fahrenheit (°F) | Kelvin (K) | Rankine (°R) |
|---|---|---|---|---|
| Absolute Zero | -273.15 | -459.67 | 0 | 0 |
| Freezing Point of Water | 0 | 32 | 273.15 | 491.67 |
| Room Temperature | 20 | 68 | 293.15 | 527.67 |
| Human Body Temperature | 37 | 98.6 | 310.15 | 558.27 |
| Boiling Point of Water | 100 | 212 | 373.15 | 671.67 |
🎯 Quick Reference Formulas
Mental Math Approximations
°C to °F (Quick)
Double and add 30
25°C → 50 + 30 = 80°F (actual: 77°F)
°F to °C (Quick)
Subtract 30 and halve
80°F → (80-30)/2 = 25°C