Growing Degree Days Calculator

Calculate accumulated growing degree days for crop planning based on daily temperatures and base temperature for your crop type.

Average Daily High (°F)

Average Daily Low (°F)

Base Temperature (°F)

Growing Period (days)

Formula

Daily GDD = max((High + Low) / 2 - Base Temp, 0); Total GDD = Daily GDD x Number of Days; Days to Maturity = Required GDD / Daily GDD

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