Temperature Converter
Convert between Celsius, Fahrenheit, Kelvin, and more
Input Parameters
°C
Key Temperature Points:
• Absolute Zero: -273.15°C / -459.67°F
• Water Freezes: 0°C / 32°F
• Water Boils: 100°C / 212°F (at sea level)
Conversion Results
68.0 °F
Equivalent to 20°C / 293.15K
| Temperature Scale | Value |
|---|---|
| Celsius | 20.0 °C |
| Fahrenheit | 68.0 °F |
| Kelvin | 293.15 K |
| Rankine | 527.67 °R |
Cold
Moderate
Hot
Absolute Zero
-273.15°C
Freezing Point
0.0°C
Boiling Point
100.0°C
Human Body
37.0°C
SI Units
ISO 80000-5
A Temperature Conversion Calculator is an essential tool that converts temperature values between different measurement scales, including Celsius (°C), Fahrenheit (°F), Kelvin (K), and Rankine (°R). This converter is widely used in meteorology, cooking, scientific research, engineering, and everyday life where accurate temperature interpretation is crucial.
Key Temperature Scales & Their Relationships
1. Celsius (°C)
Most widely used scale globally (except in the USA)
Base references:
- 0°C = Freezing point of water
- 100°C = Boiling point of water (at sea level)
Used in:
- Weather reports (most countries)
- Scientific research (except some physics applications)
- Cooking (many recipes)
2. Fahrenheit (°F)
Primarily used in the United States
Base references:
- 32°F = Freezing point of water
- 212°F = Boiling point of water (at sea level)
Used in:
- US weather forecasts
- Oven temperatures (US recipes)
- Medical thermometers (in some countries)
3. Kelvin (K)
SI base unit for thermodynamic temperature
Absolute zero = 0K (-273.15°C)
Used in:
- Physics (especially thermodynamics)
- Astronomy (stellar temperatures)
- Scientific experiments requiring absolute temperature
4. Rankine (°R)
Fahrenheit equivalent of Kelvin
Absolute zero = 0°R (-459.67°F)
Used in:
- Some engineering fields (particularly in the US)
- Thermodynamic calculations in imperial systems
Conversion Formulas Between Scales
Conversion Formula
Celsius to Fahrenheit °F = (°C × 9/5) + 32
Fahrenheit to Celsius °C = (°F - 32) × 5/9
Celsius to Kelvin K = °C + 273.15
Kelvin to Celsius °C = K - 273.15
Fahrenheit to Kelvin K = (°F - 32) × 5/9 + 273.15
Kelvin to Fahrenheit °F = (K - 273.15) × 9/5 + 32
Fahrenheit to Rankine °R = °F + 459.67
Rankine to Fahrenheit °F = °R - 459.67
Special Temperature Points
Description Celsius (°C) Fahrenheit (°F) Kelvin (K)
Absolute Zero -273.15 -459.67 0
Freezing Point of Water 0 32 273.15
Human Body Temperature 37 98.6 310.15
Boiling Point of Water 100 212 373.15
Surface of the Sun 5,500 9,932 5,773
Example Conversion Table
From → To Formula Example Sample Conversion
°C → °F (20°C × 9/5) + 32 20°C = 68°F
°F → °C (68°F - 32) × 5/9 68°F = 20°C
°C → K 20°C + 273.15 20°C = 293.15K
K → °C 300K - 273.15 300K = 26.85°C
°F → K (50°F - 32) × 5/9 + 273.15 50°F ≈ 283.15K