How do you convert -40 Fahrenheit to Celsius?

Use the formula °C = (°F - 32) × 5/9. For -40°F: (-40 - 32) × 5/9 = -40.

Is -40°F hot or cold?

-40°F (-40°C) is extremely cold, well below freezing.

What is the formula to convert Fahrenheit to Celsius?

The formula is °C = (°F - 32) × 5/9. Subtract 32, then multiply by 5/9 to go from Fahrenheit to Celsius. Multiply by 9/5 and add 32 to go from Celsius to Fahrenheit.

{value}{0} to {1}

Convert {value} {0} to {1}.

Answer

-40°F = -40°C

Formula

°C = (°F - 32) × 5/9

(-40 - 32) × 5/9 = -40

Reverse: {resultStr}{0} to {1} →

Nearby {0} to {1} conversions

Fahrenheit (°F)	Celsius (°C)
-50°F	-45.56°C
-45°F	-42.78°C
-42°F	-41.11°C
-41°F	-40.56°C
-40°F	-40°C
-39°F	-39.44°C
-38°F	-38.89°C
-35°F	-37.22°C
-30°F	-34.44°C

Related temperature conversions

-20°F → °C -10°F → °C 0°F → °C 10°F → °C 14°F → °C 20°F → °C 25°F → °C 30°F → °C 32°F → °C 40°F → °C 50°F → °C 55°F → °C

Frequently asked questions

What is {value}{0} in {1}?

{value} degrees {0} is equal to {resultStr} degrees {1}.

How do you convert {value} {0} to {1}?

Use the formula {formulaGeneric}. Plugging in {value}: {formula}.

What is the formula to convert {0} to {1}?

The formula is {formulaGeneric}. {0}

Is {value}{0} hot or cold?

{value}{0} ({resultStr}{1}) is extremely cold, well below the freezing point of water (0°C/32°F).

About this page

This page converts {value} degrees {0} to {1}, showing the exact result, formula, and a reference table of nearby temperatures. For custom conversions, use our full temperature converter tool.

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