What is the formula to convert Celsius to Fahrenheit?

Multiply by 9/5 and add 32: °F = °C × 1.8 + 32. For example, 20 °C = 68 °F.

What is absolute zero?

Absolute zero is 0 K, which equals −273.15 °C or −459.67 °F. It is the lowest temperature physically possible.

At what temperature are Celsius and Fahrenheit equal?

At −40 degrees: −40 °C equals exactly −40 °F.

Temperature Converter

Convert temperatures between Celsius, Fahrenheit, and Kelvin as you type. Unlike most unit conversions, temperature scales have different zero points, so simple multiplication isn't enough — this tool applies the standard formulas (°F = °C × 9/5 + 32, K = °C + 273.15) and shows all three scales side by side.

Converters

Value

From

1 Celsius = 33.8 Fahrenheit

1 Celsius (°C) converted to all units
Unit	Value
Celsius (°C)	1
Fahrenheit (°F)	33.8
Kelvin (K)	274.15

Private by default

This tool runs entirely in your browser. Your data is never uploaded to a server.

How to use

3 clear steps.

Enter a temperature value.
Choose the scale you are converting from (°C, °F, or K).
Read the converted value in the other scales instantly.

Good to know

Frequently asked questions

What is the formula to convert Celsius to Fahrenheit?: Multiply by 9/5 and add 32: °F = °C × 1.8 + 32. For example, 20 °C = 68 °F.
What is absolute zero?: Absolute zero is 0 K, which equals −273.15 °C or −459.67 °F. It is the lowest temperature physically possible.
At what temperature are Celsius and Fahrenheit equal?: At −40 degrees: −40 °C equals exactly −40 °F.