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To calculate from Celsius to Fahrenheit,

1. Multiply by 9

-40 * 9 = -360

2. Divide by 5

-360 / 5 = -72

3. Add 32

-72 + 32 = -40

So, -40ºC = -40F.

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13y ago
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Wiki User

14y ago

The Celsius to Fahrenheit conversion is: F = (C x 1.8) + 32

  • F = (-40 x 1.8) + 32
  • F = -72 + 32
  • Fahrenheit = -40°
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14y ago

Start by taking the number in Fahrenheit and subtracting 32. Then divide the number by 9, and then multiply it by 5. This is how you convert Fahrenheit to Celsius or use the equation C = (F - 32) × 5/9
In this case, the answer is also -40 degrees Celsius.

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Wiki User

8y ago

For every 1 degree Fahrenheit there is a negative number of Celsius (17.2 estimate)

But in answer to your question 40 degrees Fahrenheit equals around 4 degrees Celsius

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Wiki User

14y ago

40 degrees Fahrenheit = 4.44 degrees Celsius

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Q: -40 degrees Celsius equals how many Fahrenheit?
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