Spike's Calculators

Orchard and Vineyard

Converting Celsius GDD to Fahrenheit GDD

Spike VM

GDD can be calculated in Celsius or Fahrenheit, but a Celsius degree-day is not the same as a Fahrenheit degree-day. A Fahrenheit degree-day is smaller than a Celsius degree-day. It takes nine Fahrenheit degree-days to make five Celsius degree-days.

Growing Degree
Days in Celcius:


Number of Growing Degree
Days in Fahrenheit
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