Question 1

How do I convert Celsius to Fahrenheit?

Accepted Answer

Use the formula: °F = (°C × 9/5) + 32. For example, 100°C = 212°F. Our converter does this instantly for all units at once.

Question 2

What is absolute zero?

Accepted Answer

Absolute zero (0 K = −273.15°C = −459.67°F) is the lowest possible temperature where particles have minimum thermal motion.

Question 3

What is the difference between Kelvin and Celsius?

Accepted Answer

Kelvin and Celsius use the same scale size (1 K = 1°C difference), but Kelvin starts at absolute zero while Celsius starts at water's freezing point. K = °C + 273.15.

Question 4

What is Rankine?

Accepted Answer

Rankine (°Ra) is an absolute temperature scale like Kelvin, but based on Fahrenheit degrees. 0°Ra = absolute zero.

Question 5

What is Réaumur?

Accepted Answer

Réaumur (°Ré) is a historical scale where water freezes at 0°Ré and boils at 80°Ré. It was widely used in Europe before Celsius became standard.

Question 6

What is normal human body temperature?

Accepted Answer

Normal body temperature is approximately 37°C, 98.6°F, 310.15 K, 29.6°Ré, or 558.27°Ra.

From	To Celsius	To Fahrenheit	To Kelvin
Celsius (°C)	—	(°C × 9/5) + 32	°C + 273.15
Fahrenheit (°F)	(°F − 32) × 5/9	—	(°F + 459.67) × 5/9
Kelvin (K)	K − 273.15	(K × 9/5) − 459.67	—

Temperature Converter

Enter Temperature

All Conversions

Conversion Formulas

Frequently Asked Questions

How do I convert Celsius to Fahrenheit?

What is absolute zero?

What is the difference between Kelvin and Celsius?

What is Rankine?

What is Réaumur?

What is normal human body temperature?

Related Tools

Weight Converter

Length Converter