CalcLibrary

Temperature Converter

Convert Celsius, Fahrenheit, and Kelvin instantly. Perfect for weather, cooking, science, HVAC settings, and international temperature references.

Examples

Convert 72 °F into Celsius.

Converted temperature
22.2222 °C
Conversion
72 F = 22.2222 C

This sits in a typical room-temperature range.

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Examples

How It Works

Formula

TF=TC×95+32T_F = T_C \times \frac{9}{5} + 32

TC=(TF−32)×59T_C = (T_F - 32) \times \frac{5}{9}

TK=TC+273.15T_K = T_C + 273.15

TC=TK−273.15T_C = T_K - 273.15

Variables

TCT_C

Temperature in Celsius(°C)

TFT_F

Temperature in Fahrenheit(°F)

TKT_K

Temperature in Kelvin(K)

The calculator first converts the input to Celsius as an internal reference point, then converts from Celsius into the target scale. That is why Celsius, Fahrenheit, and Kelvin all stay consistent.

Frequently Asked Questions

01How do I convert Celsius to Fahrenheit?
Multiply Celsius by 9/5 and add 32. For example, 20 °C becomes 68 °F.
02What is Kelvin used for?
Kelvin is the SI temperature scale used in science and engineering. It starts at absolute zero and does not use degrees in the unit name.
03Can Kelvin be negative?
No. 0 K is absolute zero, the theoretical lowest possible temperature. Anything below that is physically invalid.
04Is 98.6 °F the same as 37 °C?
Yes. 98.6 °F converts to 37 °C, which is why it is often used as the classic reference for average body temperature.
05Why is temperature conversion not just a simple multiplier?
Because Celsius and Fahrenheit have different zero points as well as different step sizes. Temperature conversion needs both multiplication and an offset.

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