Question 1

How do I convert Celsius to Fahrenheit?

Accepted Answer

Formula: °F = (°C × 9/5) + 32. Multiply the Celsius value by 1.8, then add 32.

Question 2

What is absolute zero?

Accepted Answer

Absolute zero is -273.15°C / -459.67°F / 0 K / 0°R — the lowest possible temperature where all molecular motion ceases.

Question 3

What are common reference temperatures?

Accepted Answer

Water freezes at 0°C (32°F), body temperature is ~37°C (98.6°F), and water boils at 100°C (212°F) at sea level.

Question 4

What is Rankine?

Accepted Answer

Rankine (°R) is an absolute temperature scale using Fahrenheit degrees. It starts at absolute zero (0°R) like Kelvin but uses the Fahrenheit scale intervals.

Question 5

How do I convert online free?

Accepted Answer

Pick the from and to units above and the result appears instantly. Free, no sign-up, works on mobile.

Question 6

Which units are supported?

Accepted Answer

All common units are supported. Choose from the dropdowns above for an instant free conversion.