C F K

Condition	Celsius (°C)	Fahrenheit (°F)	Kelvin (K)
Absolute Zero	-273.15	-459.67	0
Water Freezing	0	32	273.15
Body Temperature	37	98.6	310.15
Water Boiling	100	212	373.15

Temperature Conversion Formulas

• Celsius to Fahrenheit: F = (C * 1.8) + 32
• Fahrenheit to Celsius: C = (F - 32) / 1.8
• Celsius to Kelvin: K = C + 273.15
• Kelvin to Celsius: C = K - 273.15

Understanding Temperature Scales: A Complete Guide

Besides Celsius and Fahrenheit, several other temperature scales are commonly used in scientific and technical contexts. Below is a summary of the main temperature scales and how to convert between them.

Main Temperature Scales

• Celsius (°C): Based on the freezing point (0°C) and boiling point (100°C) of water at standard atmospheric pressure.
• Fahrenheit (°F): Commonly used in the United States. Water freezes at 32°F and boils at 212°F.
• Kelvin (K): The international thermodynamic scale. Does not use degrees (°). This scale starts at absolute zero (0 K), where no thermal energy remains.
• Rankine (°R): The Fahrenheit scale starting from absolute zero. Often used in mechanical engineering and thermodynamic systems.

Complete Conversion Formulas

From	To	Conversion Formula
Celsius	Kelvin	K = C + 273.15
Kelvin	Celsius	C = K - 273.15
Celsius	Fahrenheit	F = (C × 1.8) + 32
Fahrenheit	Celsius	C = (F − 32) / 1.8
Fahrenheit	Rankine	R = F + 459.67

Reference Point Comparison

Condition	Celsius (°C)	Fahrenheit (°F)	Kelvin (K)
Absolute Zero	−273.15	−459.67	0
Water Freezing Point	0	32	273.15
Human Body Temperature	37	98.6	310.15
Water Boiling Point	100	212	373.15

Technical Note: In engineering applications or scientific data, Kelvin is the global standard due to its absolute nature (no negative values), which is essential in calculations of engine efficiency or thermodynamics.

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