-200 degrees celsius is -328 degrees Fahrenheit.

To convert from Celsius to Fahrenheit, we can use the following formula:

°F = (°C × 9/5) + 32

Substituting -200°C into the formula, we get:

°F = (-200 × 9/5) + 32

°F = (-360) + 32

°F = -328

So, -200 degrees Celsius is -328 degrees Fahrenheit.